Structure of 91760-66-6
*Storage: {[sel_prStorage]}
*Shipping: {[sel_prShipping]}
The BI-3802 was designed by Boehringer Ingelheim and could be obtained free of charge through the Boehringer Ingelheim open innovation portal opnMe.com, associated with its negative control.
4.5
*For Research Use Only !
Change View
| Size | Price | VIP Price |
DE Stock US Stock |
Asia Stock Global Stock |
In Stock |
| {[ item.pr_size ]} |
Inquiry
{[ getRatePrice(item.pr_usd, 1,1,item.pr_is_large_size_no_price, item.pr_usd) ]} {[ getRatePrice(item.pr_usd,item.pr_rate,1,item.pr_is_large_size_no_price, item.discount_usd) ]} {[ getRatePrice(item.pr_usd, 1,1,item.pr_is_large_size_no_price, item.pr_usd) ]} |
Inquiry {[ getRatePrice(item.pr_usd,item.pr_rate,item.mem_rate,item.pr_is_large_size_no_price, item.vip_usd) ]} | {[ item.p_spot_brand_remark ]} 1-2 weeks {[ item.pr_usastock ]} In Stock Inquiry - | {[ item.p_spot_brand_remark ]} 1-2 weeks {[ item.pr_chinastock ]} {[ item.pr_remark ]} In Stock Inquiry - | Login - + |
Please Login or Create an Account to: See VIP prices and availability
Asia Stock: Ship in 3-5 business days
EU Stock: ship in 0-1 business day
Global Stock: ship in 5-7 days
US Stock: ship in 0-1 business day
Global Stock: ship in 5-7 days
{[ item.p_spot_brand_remark ]}
1-2weeks
Inquiry
Inquiry
{[ getRatePrice(item.pr_usd,item.pr_rate,item.mem_rate,item.pr_is_large_size_no_price, item.vip_usd) ]}
{[ getRatePrice(item.pr_usd, 1,1,item.pr_is_large_size_no_price, item.pr_usd) ]}
{[ getRatePrice(item.pr_usd,1,item.mem_rate,item.pr_is_large_size_no_price, item.pr_usd) ]}
{[ item.p_spot_brand_remark ]}
1-2weeks
Inquiry
Inquiry
{[ getRatePrice(item.pr_usd,item.pr_rate,1,item.pr_is_large_size_no_price, item.vip_usd) ]}
{[ getRatePrice(item.pr_usd, 1,1,item.pr_is_large_size_no_price, item.pr_usd) ]}
{[ getRatePrice(item.pr_usd, 1,1,item.pr_is_large_size_no_price, item.pr_usd) ]}
In Stock
- +
Please Login or Create an Account to: See VIP prices and availability
Asia Stock: Ship in 3-5 business days
EU Stock: ship in 0-1 business day
Global Stock: ship in 5-7 days
US Stock: ship in 0-1 business day
Global Stock: ship in 5-7 days
Search for reports by entering the product batch number.
Batch number can be found on the product's label following the word 'Batch'.
Search for reports by entering the product batch number.
Batch number can be found on the product's label following the word 'Batch'.
Search for reports by entering the product batch number.
Batch number can be found on the product's label following the word 'Batch'.
Search for reports by entering the product batch number.
Batch number can be found on the product's label following the word 'Batch'.
Search for reports by entering the product batch number.
Batch number can be found on the product's label following the word 'Batch'.
| CAS No. : | 91760-66-6 |
| Formula : | C8H5BrO3 |
| M.W : | 229.03 |
| SMILES Code : | OC(=O)C1=CC(Br)=C(C=O)C=C1 |
| MDL No. : | MFCD23135693 |
| InChI Key : | GBKQIFMNYQGCEJ-UHFFFAOYSA-N |
| Pubchem ID : | 11715580 |
| GHS Pictogram: |
|
| Signal Word: | Warning |
| Hazard Statements: | H315-H319-H335 |
| Precautionary Statements: | P261-P305+P351+P338 |
| Num. heavy atoms | 12 |
| Num. arom. heavy atoms | 6 |
| Fraction Csp3 | 0.0 |
| Num. rotatable bonds | 2 |
| Num. H-bond acceptors | 3.0 |
| Num. H-bond donors | 1.0 |
| Molar Refractivity | 46.49 |
| TPSA ? Topological Polar Surface Area: Calculated from |
54.37 Ų |
| Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.24 |
| Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
2.19 |
| Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
1.96 |
| Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
1.71 |
| Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
2.05 |
| Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
1.83 |
| Log S (ESOL):? ESOL: Topological method implemented from |
-2.88 |
| Solubility | 0.304 mg/ml ; 0.00133 mol/l |
| Class? Solubility class: Log S scale |
Soluble |
| Log S (Ali)? Ali: Topological method implemented from |
-2.97 |
| Solubility | 0.248 mg/ml ; 0.00108 mol/l |
| Class? Solubility class: Log S scale |
Soluble |
| Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-2.58 |
| Solubility | 0.604 mg/ml ; 0.00264 mol/l |
| Class? Solubility class: Log S scale |
Soluble |
| GI absorption? Gatrointestinal absorption: according to the white of the BOILED-Egg |
High |
| BBB permeant? BBB permeation: according to the yolk of the BOILED-Egg |
Yes |
| P-gp substrate? P-glycoprotein substrate: SVM model built on 1033 molecules (training set) |
No |
| CYP1A2 inhibitor? Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set) |
No |
| CYP2C19 inhibitor? Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set) |
No |
| CYP2C9 inhibitor? Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set) |
No |
| CYP2D6 inhibitor? Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set) |
No |
| CYP3A4 inhibitor? Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set) |
No |
| Log Kp (skin permeation)? Skin permeation: QSPR model implemented from |
-6.14 cm/s |
| Lipinski? Lipinski (Pfizer) filter: implemented from |
0.0 |
| Ghose? Ghose filter: implemented from |
None |
| Veber? Veber (GSK) filter: implemented from |
0.0 |
| Egan? Egan (Pharmacia) filter: implemented from |
0.0 |
| Muegge? Muegge (Bayer) filter: implemented from |
0.0 |
| Bioavailability Score? Abbott Bioavailability Score: Probability of F > 10% in rat |
0.56 |
| PAINS? Pan Assay Interference Structures: implemented from |
0.0 alert |
| Brenk? Structural Alert: implemented from |
1.0 alert: heavy_metal |
| Leadlikeness? Leadlikeness: implemented from |
No; 1 violation:MW<1.0 |
| Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) |
1.43 |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

[ 1455-21-6 ]
[ 91760-66-6 ]
[ 95-55-6 ]
[ 1455-21-6 ]
[ 91760-66-6 ]
[ 137-07-5 ]
[ 1455-21-6 ]
[ 91760-66-6 ]
[ 4760-34-3 ]
[ 1455-21-6 ]
[ 91760-66-6 ]
[ 95-54-5 ]
[ 110-96-3 ]
[ 91760-66-6 ]
[ 95-55-6 ]
[ 110-96-3 ]
[ 91760-66-6 ]
[ 137-07-5 ]
[ 110-96-3 ]
[ 91760-66-6 ]
[ 4760-34-3 ]
[ 110-96-3 ]
[ 91760-66-6 ]
[ 95-54-5 ]
[ 91760-66-6 ]
[ 4760-34-3 ]
[ 71-36-3 ]
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 960.3 g | With sodium carbonate; In water; ethyl acetate; at 40 - 90℃; for 4h; | Intermediate 33 (1860 g, 4.23 mol, 1.0 eq.) was suspended in water (5 L) and the slurry was heated to an internal temperature of 40 C. Solid Na2CO3 (1460 g, 13.77 mol, 3.25 eq.) was then added in small portions over a period of 20 minutes. Foaming resulted on initial addition, so EtOAc (0.2 L) was added to collapse the foam and suppress any further foaming. Once addition was complete, the brown suspension was heated to 90 C. over 40 minutes, then stirred at 90 C. for 90 minutes, then cooled to 40 C. over 90 minutes. EtOAc (1.5 L) was added, followed by addition of aqueous concentrated HCl via dropping funnel (0.7 L), resulting in vigorous evolution of CO2 gas and evaporation of most of the EtOAc. Further EtOAc (1 L) was added to wash the foaming product from the condenser and the walls of the reactor, then additional EtOAc (0.3 L) was added and the thick slurry was stirred at RT overnight. The slurry was then heated to 40 C. and further aqueous concentrated HCl was added via dropping funnel with vigorous stirring over 45 minutes, resulting in CO2 gas evolution, evaporation of most of the EtOAc and formation of a solid. Stirring was ceased, and the solid floated to the top of the aqueous mixture (pH 1). The majority of the aqueous layer was separated (ca. 5 L) and then 2-MeTHF (5 L) was added. The clear aqueous layer was then removed, and the organic layer diluted to 10 L with additional 2-MeTHF, and warmed to 50 C. to give a dark orange solution.The organic layer was then washed with 1 M HCl (0.5 L), evaporated, and azeotroped with toluene to afford the title compound as a tan coloured solid (960.3 g). LCMS (Method 4): Rt 2.73 min, m/z 227, 229 [M-H] 1H NMR (300 MHz, DMSO): delta 10.26 (1H, d, J=0.8 Hz), 8.20 (1H, d, J=1.5 Hz), 8.08-8.04 (1H, m), 7.95 (1H, d, J=8.0 Hz). |
| 960.3 g | With water; sodium carbonate; In ethyl acetate; at 40 - 90℃; for 3.66667h; | Intermediate 33 (1860 g, 4.23 mol, 1.0 eq.) was suspended in water (5 L) and the slurry was heated to an internal temperature of 40C. Solid Na2C03 (1460 g, 13.77 mol, 3.25 eq.) was then added in small portions over a period of 20 min. Foaming resulted on initial addition, so EtOAc (0.2 L) was added to collapse the foam and suppress any further foaming. Once addition was complete, the brown suspension was heated to 90C over 40 min, then stirred at 90C for 90 min, then cooled to 40C over 90 min. EtOAc (1.5 L) was added, followed by addition of aqueous concentrated HC1 via dropping funnel (0.7 L), resulting in vigorous evolution of C02 gas and evaporation of most of the EtOAc. Further EtOAc (1 L) was added to wash the foaming product from the condenser and the walls of the reactor, then additional EtOAc (0.3 L) was added and the thick slurry was stirred at RT overnight. The slurry was then heated to 40C and further aqueous concentrated HC1 was added via dropping funnel with vigorous stirring over 45 min, resulting in C02 gas evolution, evaporation of most of the EtOAc and formation of a solid. Stirring was ceased, and the solid floated to the top of the aqueous mixture (pH 1). The majority of the aqueous layer was separated (ca. 5 L) and then 2-MeTHF (5 L) was added. The clear aqueous layer was then removed, and the organic layer diluted to 10 L with additional 2- MeTHF, and warmed to 50C to give a dark orange solution. The organic layer was then washed with 1 M HC1 (0.5 L), evaporated, and azeotroped with toluene to afford the title compound as a tan coloured solid (960.3 g). LCMS (Method 4):Rt 2.73 min, m/z 227, 229 [M-H] 1H NMR (300 MHz, DMSO): delta 10.26 (1H, d, J = 0.8 Hz), 8.20 (1H, d, J = 1.5 Hz), 8.08- 8.04 (1H, m), 7.95 (1H, d, J = 8.0 Hz). |
| 960.3 g | With sodium carbonate; In water; ethyl acetate; at 40 - 90℃; | Intermediate 1 (1860 g, 4.23 mol, 1.0 eq.) was suspended in water (5 L) and the slurry was heated to an internal temperature of 40 C. Solid Na2CO3 (1460 g, 13.77 mol, 3.25 eq.) was then added in small portions over a period of 20 min. Foaming resulted on initial addition, so EtOAc (0.2 L) was added to collapse the foam and suppress any further foaming. Once addition was complete, the brown suspension was heated to 90 C. over 40 min, then stirred at 90 C. for 90 min, then cooled to 40 C. over 90 min. EtOAc (1.5 L) was added, followed by addition of aqueous concentrated HCl via dropping funnel (0.7 L), resulting in vigorous evolution of CO2 gas and evaporation of most of the EtOAc. Further EtOAc (1 L) was added to wash the foaming product from the condenser and the walls of the reactor, then additional EtOAc (0.3 L) was added and the thick slurry was stirred at RT overnight. The slurry was then heated to 40 C. and further aqueous concentrated HCl was added via dropping funnel with vigorous stirring over 45 min, resulting in CO2 gas evolution, evaporation of most of the EtOAc and formation of a solid. Stirring was ceased, and the solid floated to the top of the aqueous mixture (pH 1). The majority of the aqueous layer was separated (ca. 5 L) and then 2-MeTHF (5 L) was added. The clear aqueous layer was then removed, and the organic layer diluted to 10 L with additional 2-MeTHF, and warmed to 50 C. to give a dark orange solution. The organic layer was then washed with 1 M HCl (0.5 L), evaporated, and azeotroped with toluene to afford the title compound as a tan coloured solid (960.3 g). LCMS (Method 4): Rt 2.73 min, m/z 227, 229 [M-H] 1H NMR (300 MHz, DMSO): delta 10.26 (1H, d, J=0.8 Hz), 8.20 (1H, d, J=1.5 Hz), 8.08-8.04 (1H, m), 7.95 (1H, d, J=8.0 Hz). |
| 960.3 g | Intermediate 1 (1860 g, 4.23 mol, 1.0 eq.) was suspended in water (5 L) and the slurry was heated to an internal temperature of 40C. Solid Na2C03 (1460 g, 13.77 mol, 3.25 eq.) was then added in small portions over a period of 20 min. Foaming resulted on initial addition, so EtOAc (0.2 L) was added to collapse the foam and suppress any further foaming. Once addition was complete, the brown suspension was heated to 90C over 40 min, then stirred at 90C for 90 min, then cooled to 40C over 90 min. EtOAc (1.5 L) was added, followed by addition of aqueous concentrated HC1 via dropping funnel (0.7 L), resulting in vigorous evolution of C02 gas and evaporation of most of the EtOAc. Further EtOAc (1 L) was added to wash the foaming product from the condenser and the walls of the reactor, then additional EtOAc (0.3 L) was added and the thick slurry was stirred at RT overnight. The slurry was then heated to 40C and further aqueous concentrated HC1 was added via dropping funnel with vigorous stirring over 45 min, resulting in C02 gas evolution, evaporation of most of the EtOAc and formation of a solid. Stirring was ceased, and the solid floated to the top of the aqueous mixture (pH 1). The majority of the aqueous layer was separated (ca. 5 L) and then 2-MeTHF (5 L) was added. The clear aqueous layer was then removed, and the organic layer diluted to 10 L with additional 2-MeTHF, and warmed to 50 C to give a dark orange solution. The organic layer was then washed with 1 M HC1 (0.5 L), evaporated, and azeotroped with toluene to afford the title compound as a tan coloured solid (960.3 g). LCMS (Method 4): Rt 2.73 min, m/z 227, 229 [M-H] NMR (300 MHz, DMSO): delta 10.26 (1H, d, J = 0.8 Hz), 8.20 (1H, d, J = 1.5 Hz), 8.08- 8.04 (1H, m), 7.95 (1H, d, J = 8.0 Hz). | |
| 960.3 g | With water; sodium carbonate; In ethyl acetate; at 40 - 90℃; for 4h;Large scale; | Intermediate 1 (1860 g, 4.23 mol, 1.0 eq.) was suspended in water (5 L) and the slurry was heated to an internal temperature of 40C. Solid Na2C03 (1460 g, 13.77 mol, 3.25 eq.) was then added in small portions over a period of 20 min. Foaming resulted on initial addition, so EtOAc (0.2 L) was added to collapse the foam and suppress any further foaming. Once addition was complete, the brown suspension was heated to 90C over 40 min, then stirred at 90C for 90 min, then cooled to 40C over 90 min. EtOAc (1.5 L) was added, followed by addition of aqueous concentrated HC1 via dropping funnel (0.7 L), resulting in vigorous evolution of C02 gas and evaporation of most of the EtOAc. Further EtOAc (1 L) was added to wash the foaming product from the condenser and the walls of the reactor, then additional EtOAc (0.3 L) was added and the thick slurry was stirred at RT overnight. The slurry was then heated to 40C and further aqueous concentrated HC1 was added via dropping funnel with vigorous stirring over 45 min, resulting in C02 gas evolution, evaporation of most of the EtOAc and formation of a solid. Stirring was ceased, and the solid floated to the top of the aqueous mixture (pH 1). The majority of the aqueous layer was separated (ca. 5 L) and then 2-MeTHF (5 L) was added. The clear aqueous layer was then removed, and the organic layer diluted to 10 L with additional 2-MeTHF, and warmed to 50C to give a dark orange solution. The organic layer was then washed with 1 M HC1 (0.5 L), evaporated, and azeotroped with toluene to afford the title compound as a tan coloured solid (960.3 g). LCMS (Method 4): Rt 2.73 min, m/z 227 [M(79Br)+H]+ 1H NMR (300 MHz, DMSO): delta 10.26 (1H, d, J = 0.8 Hz), 8.20 (1H, d, J = 1.5 Hz), 8.08-8.04 (1H, m), 7.95 (1H, d, J = 8.0 Hz). |
| 960.3 g | With sodium carbonate; In water; ethyl acetate; at 40 - 90℃; for 4h; | Intermediate 1 (1860 g, 4.23 mol, 1.0 eq.) was suspended in water (5 L) and the slurry was heated to an internal temperature of 40 C. Solid Na2CO3 (1460 g, 13.77 mol, 3.25 eq.) was then added in small portions over a period of 20 min. Foaming resulted on initial addition, so EtOAc (0.2 L) was added to collapse the foam and suppress any further foaming. Once addition was complete, the brown suspension was heated to 90 C. over 40 min, then stirred at 90 C. for 90 min, then cooled to 40 C. over 90 min. EtOAc (1.5 L) was added, followed by addition of aqueous concentrated HCl via dropping funnel (0.7 L), resulting in vigorous evolution of CO2 gas and evaporation of most of the EtOAc. Further EtOAc (1 L) was added to wash the foaming product from the condenser and the walls of the reactor, then additional EtOAc (0.3 L) was added and the thick slurry was stirred at RT overnight. The slurry was then heated to 40 C. and further aqueous concentrated HCl was added via dropping funnel with vigorous stirring over 45 min, resulting in CO2 gas evolution, evaporation of most of the EtOAc and formation of a solid. Stirring was ceased, and the solid floated to the top of the aqueous mixture (pH 1). The majority of the aqueous layer was separated (ca. 5 L) and then 2-MeTHF (5 L) was added. The clear aqueous layer was then removed, and the organic layer diluted to 10 L with additional 2-MeTHF, and warmed to 50 C. to give a dark orange solution. The organic layer was then washed with 1 M HCl (0.5 L), evaporated, and azeotroped with toluene to afford the title compound as a tan coloured solid (960.3 g).LCMS (Method 4): Rt 2.73 min, m/z 227 [M(79Br)+H]+1H NMR (300 MHz, d6-DMSO): delta10.26 (1H, d, J=0.8 Hz), 8.20 (1H, d, J=1.5 Hz), 8.08-8.04 (1H, m), 7.95 (1H, d, J=8.0 Hz). |

| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 754 g | With polyphosphoric acid; In tetrahydrofuran; diethyl ether; at -10 - 75℃; for 20h;Inert atmosphere; | Intermediate 34 (458 g, 2 mol, 1.0 eq.), methyl acetoacetate (274.4 g, 255 mL, 2.36 mol, 1.18 eq.) and 3-trifluoromethylphenyl thiourea (519 g, 2.36 mol, 1.18 eq.), were charged to a 10 L jacketed reactor under a N2 atmosphere, and suspended in THF (4.6 L) and while stirring, was cooled to -10 C. (internal temperature -3 C.). Polyphosphoric acid (1650 g, 3.6 wt eq.), was prewarmed in a water bath at 50 C., then added in one portion, resulting in an immediate exotherm, and the internal temperature rose to 19 C. The resulting orange mixture was then warmed to 75 C. in 10 C. increments to a gentle reflux, and the reaction stirred at this temperature for 20 hours. The reaction was then cooled to 20 C. and the bulk of THF removed in vacuo to give a dark orange viscous oil, which was then diluted with water (5 L) and Et2O (5 L).The aqueous layer was separated and extracted again with Et2O (2*2 L) and the combined organics were subsequently washed with water (1 L), brine (1 L) and dried (Na2SO4) and filtered through Celite to remove any fine particulates. The filtered solution was then concentrated in vacuo to give a viscous orange gum which was resuspended in Et2O (ca. 1.5 L) and left to stand overnight. The resulting suspension was filtered and the solid collected was rinsed with Et2O (0.5 L) and dried in a vacuum oven at 50 C. (8 mbar) for 4 days to afford the title compound (754 g). LCMS (Method 1): Rt 3.52 min, m/z 529, 531 [M+H]+ 1H NMR (300 MHz, DMSO): delta 10.15 (1H, d, J=3.5 Hz), 8.11 (1H, d, J=1.6 Hz), 8.05 (1H, dd, J=8.1, 1.7 Hz), 7.92-7.64 (5H, m), 5.80 (1H, d, J=2.9 Hz), 3.53 (3H, s), 2.07 (3H, s). |
| 754 g | With polyphosphoric acid; In tetrahydrofuran; at -10 - 75℃; for 20h;Inert atmosphere; | Intermediate 34 (458 g, 2 mol, 1.0 eq.), methyl acetoacetate (274.4 g, 255 mL, 2.36 mol, 1.18 eq.) and 3-trifluoromethylphenyl thiourea (519 g, 2.36 mol, 1.18 eq.), were charged to a 10 L jacketed reactor under a N2 atmosphere, and suspended in THF (4.6 L) and while stirring, was cooled to -10C (internal temperature -3C). Polyphosphoric acid (1650 g, 3.6 wt eq.), was prewarmed in a water bath at 50C, then added in one portion, resulting in an immediate exotherm, and the internal temperature rose to 19C. The resulting orange mixture was then warmed to 75C in 10C increments to a gentle reflux, and the reaction stirred at this temperature for 20 h. The reaction was then cooled to 20C and the bulk of THF removed in vacuo to give a dark orange viscous oil, which was then diluted with water (5 L) and Et20 (5 L). The aqueous layer was separated and extracted again with Et20 (2 x 2 L) and the combined organics were subsequently washed with water (1 L), brine (1 L) and dried (Na2S04) and filtered through Celite to remove any fine particulates. The filtered solution was then concentrated in vacuo to give a viscous orange gum which was resuspended in Et20 (ca. 1.5 L) and left to stand overnight. The resulting suspension was filtered and the solid collected was rinsed with Et20 (0.5 L) and dried in a vacuum oven at 50C (8 mbar) for 4 days to afford the title compound (754 g). LCMS (Method l):Rt 3.52 min, m/z 529, 531 [M+H]+ 1H NMR (300 MHz, DMSO): delta 10.15 (1H, d, J = 3.5 Hz), 8.11 (1H, d, J = 1.6 Hz), 8.05 (1H, dd, J = 8.1, 1.7 Hz), 7.92-7.64 (5H, m), 5.80 (1H, d, J = 2.9 Hz), 3.53 (3H, s), 2.07 (3H, s). |
| 754 g | With Polyphosphoric acid; In tetrahydrofuran; at -10 - 75℃; for 20h;Inert atmosphere; Industrial scale; | Intermediate 2 (458 g, 2 mol, 1.0 eq.), methyl acetoacetate (274.4 g, 255 mL, 2.36 mol, 1.18 eq.) and 3-trifluoromethylphenyl thiourea (519 g, 2.36 mol, 1.18 eq.), were charged to a 10 L jacketed reactor under a N2 atmosphere, and suspended in THF (4.6 L) and while stirring, was cooled to -10 C. (internal temperature -3 C.). Polyphosphoric acid (1650 g, 3.6 wt eq.), was prewarmed in a water bath at 50 C., then added in one portion, resulting in an immediate exotherm, and the internal temperature rose to 19 C. The resulting orange mixture was then warmed to 75 C. in 10 C. increments to a gentle reflux, and the reaction stirred at this temperature for 20 h. The reaction was then cooled to 20 C. and the bulk of THF removed in vacuo to give a dark orange viscous oil, which was then diluted with water (5 L) and Et2O (5 L). The aqueous layer was separated and extracted again with Et2O (2×2 L) and the combined organics were subsequently washed with water (1 L), brine (1 L) and dried (Na2SO4) and filtered through Celite to remove any fine particulates. The filtered solution was then concentrated in vacuo to give a viscous orange gum which was resuspended in Et2O (ca. 1.5 L) and left to stand overnight. The resulting suspension was filtered and the solid collected was rinsed with Et2O (0.5 L) and dried in a vacuum oven at 50 C. (8 mbar) for 4 days to afford the title compound (754 g). LCMS (Method 1): Rt 3.52 min, m/z 529, 531 [M+H]+ 1H NMR (300 MHz, DMSO): delta 10.15 (1H, d, J=3.5 Hz), 8.11 (1H, d, J=1.6 Hz), 8.05 (1H, dd, J=8.1, 1.7 Hz), 7.92-7.64 (5H, m), 5.80 (1H, d, J=2.9 Hz), 3.53 (3H, s), 2.07 (3H, s). |
| 754 g | With Polyphosphoric acid; In tetrahydrofuran; at -3℃; for 20h;Inert atmosphere; Reflux; | Intermediate 2 (458 g, 2 mol, 1.0 eq.), methyl acetoacetate (274.4 g, 255 mL, 2.36 mol, 1.18 eq.) and 3-trifluoromethylphenyl thiourea (519 g, 2.36 mol, 1.18 eq.), were charged to a 10 L jacketed reactor under a N2 atmosphere, and suspended in THF (4.6 L) and while stirring, was cooled to -10C (internal temperature -3C). Polyphosphoric acid (1650 g, 3.6 wt eq.), was prewarmed in a water bath at 50C, then added in one portion, resulting in an immediate exotherm, and the internal temperature rose to 19C. The resulting orange mixture was then warmed to 75C in 10C increments to a gentle reflux, and the reaction stirred at this temperature for 20 h. The reaction was then cooled to 20C and the bulk of THF removed in vacuo to give a dark orange viscous oil, which was then diluted with water (5 L) and Et20 (5 L). The aqueous layer was separated and extracted again with Et20 (2 x 2 L) and the combined organics were subsequently washed with water (1 L), brine (1 L) and dried (Na2S04) and filtered through C elite to remove any fine particulates. The filtered solution was then concentrated in vacuo to give a viscous orange gum which was resuspended in Et20 (ca. 1.5 L) and left to stand overnight. The resulting suspension was filtered and the solid collected was rinsed with Et20 (0.5 L) and dried in a vacuum oven at 50 C (8 mbar) for 4 days to afford the title compound (754 g). LCMS (Method 1): Rt 3.52 min, m/z 529, 531 [M+H]+ 1HNuMuR delta(300 MHz, DMSO): delta 10.15 (1H, d, J = 3.5 Hz), 8.11 (1H, d, J = 1.6 Hz), 8.05 (1H, dd, J = 8.1, 1.7 Hz), 7.92-7.64 (5H, m), 5.80 (1H, d, J = 2.9 Hz), 3.53 (3H, s), 2.07 (3H, s). |
| 754 g | With polyphosphoric acid; In tetrahydrofuran; at -10 - 75℃; for 20h;Inert atmosphere; | Intermediate 2 (458 g, 2 mol, 1.0 eq.), methyl acetoacetate (274.4 g, 255 mL, 2.36 mol, 1.18 eq.) and 3-trifluoromethylphenyl thiourea (519 g, 2.36 mol, 1.18 eq.), were charged to a 10 L jacketed reactor under a N2 atmosphere, and suspended in THF (4.6 L) and while stirring, was cooled to -10C (internal temperature -3C). Polyphosphoric acid (1650 g, 3.6 wt eq.), was prewarmed in a water bath at 50C, then added in one portion, resulting in an immediate exotherm, and the internal temperature rose to 19C. The resulting orange mixture was then warmed to 75C in 10C increments to a gentle reflux, and the reaction stirred at this temperature for 20 h. The reaction was then cooled to 20C and the bulk of THF removed in vacuo to give a dark orange viscous oil, which was then diluted with water (5 L) and Et20 (5 L). The aqueous layer was separated and extracted again with Et20 (2 x 2 L) and the combined organics were subsequently washed with water (1 L), brine (1 L) and dried (Na2S04) and filtered through C elite to remove any fine particulates. The filtered solution was then concentrated in vacuo to give a viscous orange gum which was resuspended in Et20 (ca. 1.5 L) and left to stand overnight. The resulting suspension was filtered and the solid collected was rinsed with Et20 (0.5 L) and dried in a vacuum oven at 50C (8 mbar) for 4 days to afford the title compound (754 g). LCMS (Method 1): Rt 3.52 min, m/z 529 [M(79Br)+H]+ 1H NMR (300 MHz, DMSO): delta 10.15 (1H, d, J = 3.5 Hz), 8.11 (1H, d, J = 1.6 Hz), 8.05 (1H, dd, J = 8.1, 1.7 Hz), 7.92-7.64 (5H, m), 5.80 (1H, d, J = 2.9 Hz), 3.53 (3H, s), 2.07 (3H, s). |
| 754 g | With polyphosphoric acid; In tetrahydrofuran; at -10 - 75℃; for 20h;Inert atmosphere; | Intermediate 2 (458 g, 2 mol, 1.0 eq.), methyl acetoacetate (274.4 g, 255 mL, 2.36 mol, 1.18 eq.) and 3-trifluoromethylphenyl thiourea (519 g, 2.36 mol, 1.18 eq.), were charged to a 10 L jacketed reactor under a N2 atmosphere, and suspended in THF (4.6 L) and while stirring, was cooled to -10 C. (internal temperature -3 C.). Polyphosphoric acid (1650 g, 3.6 wt eq.), was prewarmed in a water bath at 50 C., then added in one portion, resulting in an immediate exotherm, and the internal temperature rose to 19 C. The resulting orange mixture was then warmed to 75 C. in 10 C. increments to a gentle reflux, and the reaction stirred at this temperature for 20 h. The reaction was then cooled to 20 C. and the bulk of THF removed in vacuo to give a dark orange viscous oil, which was then diluted with water (5 L) and Et2O (5 L). The aqueous layer was separated and extracted again with Et2O (2×2 L) and the combined organics were subsequently washed with water (1 L), brine (1 L) and dried (Na2SO4) and filtered through Celite to remove any fine particulates. The filtered solution was then concentrated in vacuo to give a viscous orange gum which was resuspended in Et2O (ca. 1.5 L) and left to stand overnight. The resulting suspension was filtered and the solid collected was rinsed with Et2O (0.5 L) and dried in a vacuum oven at 50 C. (8 mbar) for 4 days to afford the title compound (754 g). (0253) LCMS (Method 1): Rt 3.52 min, m/z 529 [M(79Br)+H]+ (0254) 1H NMR (300 MHz, d6-DMSO): delta10.15 (1H, d, J=3.5 Hz), 8.11 (1H, d, J=1.6 Hz), 8.05 (1H, dd, J=8.1, 1.7 Hz), 7.92-7.64 (5H, m), 5.80 (1H, d, J=2.9 Hz), 3.53 (3H, s), 2.07 (3H, s). |


A108040 [90484-53-0]
Methyl 3-bromo-4-formylbenzoate
Similarity: 0.90

A211023 [1016163-89-5]
Methyl 5-bromo-2-formylbenzoate
Similarity: 0.84