Purity | Size | Price | VIP Price | USA Stock *0-1 Day | Global Stock *5-7 Days | Quantity | |||||
{[ item.p_purity ]} | {[ item.pr_size ]} |
{[ getRatePrice(item.pr_usd, 1,1) ]} {[ getRatePrice(item.pr_usd,item.pr_rate,item.mem_rate) ]} |
{[ getRatePrice(item.pr_usd, 1,1) ]} | Inquiry {[ getRatePrice(item.pr_usd,item.pr_rate,item.mem_rate) ]} {[ getRatePrice(item.pr_usd,1,item.mem_rate) ]} | {[ item.pr_usastock ]} | Inquiry - | {[ item.pr_chinastock ]} | Inquiry - |
* Storage: {[proInfo.prStorage]}
CAS No. : | 89371-35-7 | MDL No. : | MFCD08689599 |
Formula : | C12H14N2O3 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | - |
M.W : | 234.25 | Pubchem ID : | - |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H335 | Packing Group: | N/A |
GHS Pictogram: |
* 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.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium <i>tert</i>-butylate 1) THF, -50 deg C, 20 min, 2) THF, -30 deg C, 20 min; Yield given. Multistep reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
83.3% | With hydrogen bromide; acetic acid for 0.333333h; Ambient temperature; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 1) tBuOK / 1) THF, -50 deg C, 20 min, 2) THF, -30 deg C, 20 min 2: H2 / Pd / ethanol / 2 h / 760 Torr / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: 65.7 percent / K2CO3 / acetone / Ambient temperature 2: 83.3 percent / 25percent HBr-acetic acid / 0.33 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: 85.2 percent / p-TosOH*H2O / benzene / 16 h / Heating 2: 65.7 percent / K2CO3 / acetone / Ambient temperature 3: 83.3 percent / 25percent HBr-acetic acid / 0.33 h / Ambient temperature |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
82.8% | With thionyl chloride; acetic acid In tetrahydrofuran; chloroform; ethyl acetate | 6.1 EXAMPLE 6 (1) To a solution of D-lactic acid O-tosylate (2g) in chloroform (20 ml) was added thionyl chloride (2.39 ml), and the mixture was heated under reflux for 3 hours. The reaction mixture was concentrated under reduced pressure, then reconcentrated with addition of chloroform to obtain an acid chloride (residue C). On the other hand, benzyl (4S)-1-methyl-2-oxoimidazolidine-4-carboxylate (2.21 g) was dissolved in tetrahydrofuran (25 ml), and under cooling at -50° C., potassium t-butoxide (1.06 g) was added under nitrogen gas stream, followed by stirring for 20 minutes. To this solution was added at the same temperature a solution of the above acid chloride (residue C) in tetrahydrofuran (4 ml), followed by stirring for 20 minutes. To the reaction mixture were added a mixed solution of ethyl acetate (15 ml), acetic acid (0.57 g) and saturated aqueous sodium chloride (15 ml). The organic layer was taken by separation, successively washed with saturated aqueous sodium chloride, aqueous 5 % potassium carbonate, saturated aqueous sodium chloride, and then dried. Evaporation of the solvent and recrystallization of the residue from ethyl acetate gave benzyl (4S)-1-methyl-3-[(2R)-2-(p-toluenesulfonyloxy)-propionyl] -2-oxoimidazolidine-4-carboxylate (3.1 g). Yield: 82.8%, m.p.: 153°-155° C. [α]D25: +2.5° (C=2, chloroform). IRυmaxNujol (cm-1): 1740, 1730, 1695. NMR (CDCl3) δ: 1.48 (3H,d,J=7 Hz), 2.40 (3H,s), 2.82 (3H,s), 3.28 (1H,dd,J=4,10 Hz), 3.68 (1H,t,J=10 Hz), 4.66 (1H,dd,J=4,10 Hz), 5.10, 5.26 (1H*2,AB,J=12 Hz), 6.24(1H,q,J=7 Hz), 7.32 (5H,s), 7.25, 7.77 (2H each,A2 B2, J=8 Hz). MS m/z: 460 (M+) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
80.8% | 4.1 EXAMPLE 4 (1) D-lactic acid O-mesylate (1.97 g) and benzyl (4S)-1-methyl-2-oxoimidazolidine-4-carboxylate (2.27 g) were treated similarly as in Example 1 - (1), and the crude product was purified by silica gel chromatography (ethyl acetate) and crystallized from isopropyl ether to give benzyl (4S)-1-methyl-3-[(2R)-2-(methanesulfonyloxy)propionyl]-2-oxoimidazolidine-4-carboxylate (3.01 g). Yield: 80.8%, m.p.: 98°-102° C. [α]D25: -5.0° (C=2, chloroform). IR υmaxNujol (cm-1); 1765, 1730, 1715, 1700. NMR (CDCl3) δ: 1.61 (3H,d,J=7 Hz), 2.86 (3H,s), 2.91 (3H,s), 3.36 (1H,dd,J=4,10 Hz), 3.73 (1H,t,J=10 Hz), 4.77 (1H,dd,J=4,10 Hz), 5.20 (2H,s), 6.35 (1H,q,J=7 Hz), 7.33 (5H,s). MS m/z: 384 (M+). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
83.3% | 5.2 Preparation 5 (2) 10 g of benzyl (4S)-1-methyl-3-benzyloxycarbonyl-2-oxo-imidazolidine-4-carboxylate and 40 ml of a hydrogen bromide-acetic acid solution are treated in the same manner as described in Preparation 4-(3), whereby 5.3 g of benzyl (4S)-1-methyl-2-oxo-imidazolidine-4-carboxylate are obtained as colorless crystals. Yield: 83.3% M.p. 94°-95° C. IR νmaxnujol (cm-1): 3250, 1745, 1710, 1670 Mass (m/e): 234 (M+) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: sodium tetrahydridoborate; calcium(II) chloride; ethanol / 12 h / 0 - 20 °C 2: N,N-dimethyl-4-aminopyridine / dichloromethane / 16 h / 20 °C 3: Cs2CO3 / N,N-dimethyl-formamide / 1 h / 110 °C / Microwave irradiation |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85% | With sodium tetrahydridoborate; ethanol; calcium(II) chloride at 0 - 20℃; for 12h; | 365.A Example 365: (4S)-4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxymethyl]-1-methyl-imidazolidin-2-one. Step A. (S)-4-(hydroxymethyl)-1-methylimidazolidin-2-one. To a mixture of (S)-benzyl 1-methyl-2-oxoimidazolidine-4-carboxylate (340 mg, 1.45 mmol, 1 equiv.), CaCl2 (96.7 mg, 0.871 mmol, 0.6 equiv.) and EtOH (10 mL) at 0°C was added NaBH4 (66 mg, 1.7 mmol, 1.2 equiv.).The mixture was stirred at room temperature for 12 hr. The ethanol was removed under vacuum and the residue was dissolved in sat. aq. NH4Cl (5 mL). The mixture was extracted with EtOAc (20 mL x 3) and the product was detected in the aqueous phase. The aqueous phase was frozen using dry ice/ethanol, and then lyophilized to dryness to get the crude product. To the crude product was added MeOH (5 mL) and MeCN (100 mL) to remove salt. The mixture was filtered then concentrated to give the compound (S)-4-(hydroxymethyl)-1-methylimidazolidin-2- one as a colorless oil (160 mg, 85%) |
85% | With sodium tetrahydridoborate; ethanol; calcium(II) chloride at 0 - 20℃; for 12h; | 365.A Example 365: (4S)-4-[[4-[2-[(2,6-dimethylpyrimidin-4-yl)amino]pyrazolo[1,5-a]pyridin-5-yl]- 6-methyl-3-pyridyl]oxymethyl]-1-methyl-imidazolidin-2-one. Step A. (S)-4-(hydroxymethyl)-1-methylimidazolidin-2-one. To a mixture of (S)-benzyl 1-methyl-2-oxoimidazolidine-4-carboxylate (340 mg, 1.45 mmol, 1 equiv.), CaCl2 (96.7 mg, 0.871 mmol, 0.6 equiv.) and EtOH (10 mL) at 0°C was added NaBH4 (66 mg, 1.7 mmol, 1.2 equiv.).The mixture was stirred at room temperature for 12 hr. The ethanol was removed under vacuum and the residue was dissolved in sat. aq. NH4Cl (5 mL). The mixture was extracted with EtOAc (20 mL x 3) and the product was detected in the aqueous phase. The aqueous phase was frozen using dry ice/ethanol, and then lyophilized to dryness to get the crude product. To the crude product was added MeOH (5 mL) and MeCN (100 mL) to remove salt. The mixture was filtered then concentrated to give the compound (S)-4-(hydroxymethyl)-1-methylimidazolidin-2- one as a colorless oil (160 mg, 85%) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: sodium tetrahydridoborate; calcium(II) chloride; ethanol / 12 h / 0 - 20 °C 2: N,N-dimethyl-4-aminopyridine / dichloromethane / 16 h / 20 °C |