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[ CAS No. 62473-92-1 ] {[proInfo.proName]}

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Chemical Structure| 62473-92-1
Chemical Structure| 62473-92-1
Structure of 62473-92-1 * Storage: {[proInfo.prStorage]}
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Product Details of [ 62473-92-1 ]

CAS No. :62473-92-1 MDL No. :MFCD03789731
Formula : C7H4BrNO3S Boiling Point : -
Linear Structure Formula :- InChI Key :CNDPIUXFHSMKMG-UHFFFAOYSA-N
M.W : 262.08 Pubchem ID :10540996
Synonyms :

Calculated chemistry of [ 62473-92-1 ]

Physicochemical Properties

Num. heavy atoms : 13
Num. arom. heavy atoms : 6
Fraction Csp3 : 0.0
Num. rotatable bonds : 0
Num. H-bond acceptors : 3.0
Num. H-bond donors : 1.0
Molar Refractivity : 52.42
TPSA : 71.62 Ų

Pharmacokinetics

GI absorption : High
BBB permeant : Yes
P-gp substrate : No
CYP1A2 inhibitor : Yes
CYP2C19 inhibitor : No
CYP2C9 inhibitor : No
CYP2D6 inhibitor : No
CYP3A4 inhibitor : No
Log Kp (skin permeation) : -6.76 cm/s

Lipophilicity

Log Po/w (iLOGP) : 0.92
Log Po/w (XLOGP3) : 1.6
Log Po/w (WLOGP) : 1.58
Log Po/w (MLOGP) : 0.74
Log Po/w (SILICOS-IT) : 1.23
Consensus Log Po/w : 1.22

Druglikeness

Lipinski : 0.0
Ghose : None
Veber : 0.0
Egan : 0.0
Muegge : 0.0
Bioavailability Score : 0.55

Water Solubility

Log S (ESOL) : -2.81
Solubility : 0.402 mg/ml ; 0.00153 mol/l
Class : Soluble
Log S (Ali) : -2.72
Solubility : 0.505 mg/ml ; 0.00193 mol/l
Class : Soluble
Log S (SILICOS-IT) : -3.39
Solubility : 0.107 mg/ml ; 0.000407 mol/l
Class : Soluble

Medicinal Chemistry

PAINS : 0.0 alert
Brenk : 0.0 alert
Leadlikeness : 0.0
Synthetic accessibility : 2.37

Safety of [ 62473-92-1 ]

Signal Word:Warning Class:N/A
Precautionary Statements:P280-P305+P351+P338-P310 UN#:N/A
Hazard Statements:H302-H315-H319-H332-H335 Packing Group:N/A
GHS Pictogram:

Application In Synthesis of [ 62473-92-1 ]

* 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.

  • Upstream synthesis route of [ 62473-92-1 ]
  • Downstream synthetic route of [ 62473-92-1 ]

[ 62473-92-1 ] Synthesis Path-Upstream   1~8

  • 1
  • [ 135484-83-2 ]
  • [ 62473-92-1 ]
YieldReaction ConditionsOperation in experiment
10%
Stage #1: With hydrogenchloride; sodium nitrite In water at 0 - 5℃; for 0.75 h;
Stage #2: With sulfur dioxide In water; acetic acid at 0 - 20℃; for 3.5 h;
Stage #3: With ammonium hydroxide In water at 10 - 20℃; for 1 h;
Preparation 49
6-Bromo-1,1-dioxo-1,2-dihydro-1λ6-benzo[d]isothiazol-3-one
A solution of methyl 2-amino-4-bromobenzoate (4.5 g, 20 mmol) in 20percent hydrochloric acid (30 mL) was stirred until all solids were dissolved.
The solution was cooled to 0° C. and a solution of sodium nitrite (1.4 g, 0.020 mol) in water (20 mL) was added dropwise at such a rate that the internal reaction temperature did not exceed 5° C.
The mixture was stirred at 0° C. for 45 minutes.
Sulfur dioxide was bubbled into a mixture of acetic acid (50 mL) and water (5 mL) at 0° C. until the solution was saturated.
Copper (I) chloride (2.0 g, 0.020 mol) was then added to the saturated sulfur dioxide solution.
The mixture was cooled to 0° C.
To this mixture was added the diazonium salt solution dropwise with vigorous stirring over a period of 30 minutes.
The reaction mixture was stirred at 0° C. for 1 hour and then the mixture was allowed to warm to room temperature.
The mixture was stirred at room temperature for 2 h before it was poured into ice water (250 mL) and extracted with EtOAc (3*50 mL).
The organics were washed with sat.
NaHCO3 solution and dried over anhydrous Na2SO4.
The solvent was removed in vacuo to afford an oily residue which was dissolved in tetrahydrofuran (40 mL) and cooled to 0° C.
To this mixture was added a cold (0° C.) solution of ammonium hydroxide (28percent, 40 mL) portion-wise at such a rate that the internal reaction temperature was maintained below 10° C.
The mixture was allowed to warm to room temperature and was then stirred at room temperature for 1 h.
The solvent was removed in vacuo and the residue was dissolved in saturated aqueous sodium bicarbonate (40 mL) and washed with diethyl ether (50 mL).
The aqueous layer was acidified with concentrated hydrochloric acid to pH 1.
The resulting precipitate was collected by filtration and was dried under vacuum to produce of 6-Bromo-1,1-dioxo-1,2-dihydro-1λ6-benzo[d]isothiazol-3-one (500 mg, 10percent yield).
1H NMR (400 MHz, DMSO) δ 8.44 (d, J=1.5, 1H), 8.04 (dd, J=8.1, 1.5, 1H), 7.81 (d, J=8.0, 1H).
10%
Stage #1: With hydrogenchloride; sodium nitrite In water at 0 - 5℃; for 0.75 h;
Stage #2: With sulfur dioxide; copper(l) chloride In water; acetic acid at 0 - 20℃; for 3.5 h;
solution of methyl 2-amino-4-bromobenzoate (4.5 g, 20 mmol) in 20percent hydrochloric acid (30 mL) was stirred until all solids were dissolved.
The solution was cooled to 0° C. and a solution of sodium nitrite (1.4 g, 0.020 mol) in water (20 mL) was added dropwise at such a rate that the internal reaction temperature did not exceed 5° C.
The mixture was stirred at 0° C. for 45 minutes.
Sulfur dioxide was bubbled into a mixture of acetic acid (50 mL) and water (5 mL) at 0° C. until the solution was saturated.
Copper (I) chloride (2.0 g, 0.020 mol) was then added to the saturated sulfur dioxide solution.
The mixture was cooled to 0° C.
To this mixture was added the diazonium salt solution dropwise with vigorous stirring over a period of 30 minutes.
The reaction mixture was stirred at 0° C. for 1 hour and then the mixture was allowed to warm to room temperature.
The mixture was stirred at room temperature for 2 h before it was poured into ice water (250 mL) and extracted with EtOAc (3*50 mL).
The organics were washed with sat.
NaHCO3 solution and dried over anhydrous Na2SO4.
The solvent was removed in vacuo to afford an oily residue which was dissolved in tetrahydrofuran (40 mL) and cooled to 0° C.
To this mixture was added a cold (0° C.) solution of ammonium hydroxide (28percent, 40 mL) portion-wise at such a rate that the internal reaction temperature was maintained below 10° C.
The mixture was allowed to warm to room temperature and was then stirred at room temperature for 1 h.
The solvent was removed in vacuo and the residue was dissolved in saturated aqueous sodium bicarbonate (40 mL) and washed with diethyl ether (50 mL).
The aqueous layer was acidified with concentrated hydrochloric acid to pH 1.
The resulting precipitate was collected by filtration and was dried under vacuum to produce of 6-Bromo-1,1-dioxo-1,2-dihydro-1λ6-benzo[d]isothiazol-3-one (500 mg, 10percent yield).
1H NMR (400 MHz, DMSO) δ 8.44 (d, J=1.5, 1H), 8.04 (dd, J=8.1, 1.5, 1H), 7.81 (d, J=8.0, 1H).
Reference: [1] Bioorganic and Medicinal Chemistry, 2005, vol. 13, # 4, p. 949 - 961
[2] Patent: US2008/9524, 2008, A1, . Location in patent: Page/Page column 410
[3] Patent: US2015/231142, 2015, A1, . Location in patent: Paragraph 1267
  • 2
  • [ 56919-16-5 ]
  • [ 62473-92-1 ]
Reference: [1] Arzneimittel-Forschung/Drug Research, 1996, vol. 46, # 10, p. 966 - 971
[2] Tetrahedron, 2006, vol. 62, # 33, p. 7902 - 7910
[3] Patent: WO2013/131408, 2013, A1,
[4] Patent: WO2010/100139, 2010, A1,
  • 3
  • [ 135484-83-2 ]
  • [ 62473-92-1 ]
YieldReaction ConditionsOperation in experiment
10% With ammonium hydroxide; acetic acid; sodium nitrite In tetrahydrofuran; hydrogenchloride; water; sodium hydrogencarbonate Preparation 49
6-Bromo-1,1-dioxo-1,2-dihydro-1λ6-benzo[d]isothiazol-3-one
A solution of methyl 2-amino-4-bromobenzoate (4.5 g, 20 mmol) in 20percent hydrochloric acid (30 mL) was stirred until all solids were dissolved.
The solution was cooled to 0° C. and a solution of sodium nitrite (1.4 g, 0.020 mol) in water (20 mL) was added dropwise at such a rate that the internal reaction temperature did not exceed 5° C.
The mixture was stirred at 0° C. for 45 minutes.
Sulfur dioxide was bubbled into a mixture of acetic acid (50 mL) and water (5 mL) at 0° C. until the solution was saturated.
Copper (I) chloride (2.0 g, 0.020 mol) was then added to the saturated sulfur dioxide solution.
The mixture was cooled to 0° C.
To this mixture was added the diazonium salt solution dropwise with vigorous stirring over a period of 30 minutes.
The reaction mixture was stirred at 0° C. for 1 hour and then the mixture was allowed to warm to room temperature.
The mixture was stirred at room temperature for 2 h before it was poured into ice water (250 mL) and extracted with EtOAc (3*50 mL).
The organics were washed with sat.
NaHCO3 solution and dried over anhydrous Na2SO4.
The solvent was removed in vacuo to afford an oily residue which was dissolved in tetrahydrofuran (40 mL) and cooled to 0° C.
To this mixture was added a cold (0° C.) solution of ammonium hydroxide (28percent, 40 mL) portion-wise at such a rate that the internal reaction temperature was maintained below 10° C.
The mixture was allowed to warm to room temperature and was then stirred at room temperature for 1 h.
The solvent was removed in vacuo and the residue was dissolved in saturated aqueous sodium bicarbonate (40 mL) and washed with diethyl ether (50 mL).
The aqueous layer was acidified with concentrated hydrochloric acid to pH 1.
The resulting precipitate was collected by filtration and was dried under vacuum to produce of 6-Bromo-1,1-dioxo-1,2-dihydro-1λ6-benzo[d]isothiazol-3-one (500 mg, 10percent yield).
1H NMR (400 MHz, DMSO) δ 8.44 (d, J=1.5, 1H), 8.04 (dd, J=8.1, 1.5, 1H), 7.81 (d, J=8.0, 1H).
Reference: [1] Patent: US2011/98311, 2011, A1,
  • 4
  • [ 52727-57-8 ]
  • [ 29632-82-4 ]
  • [ 62473-92-1 ]
YieldReaction ConditionsOperation in experiment
9% With ammonia; acetic acid; sodium nitrite In tetrahydrofuran; hydrogenchloride; methanol; water; sodium hydrogencarbonate Step b:
6-Bromo-1,1-dioxo-1,2-dihydro-1λ6-benzo[d]isothiazol-3-one
A solution of the methyl 2-amino-5-bromobenzoate (20.0 g, 86.9 mol) in 20percent hydrochloric acid (60 mL) was warmed until all solids were dissolved.
The solution was cooled to 0° C. with stirring to precipitate the hydrochloride salt.
To this suspension was added a solution of sodium nitrite (6.10 g, 8.84 mol) in water (20 mL) dropwise at such a rate that the internal reaction temperature did not exceed 5° C.
The mixture was stirred at 0° C. for 45 minutes to afford a clear solution.
Sulfur dioxide was bubbled into a mixture of acetic acid (100 mL) and water (10 mL) at 0° C. Copper (I) chloride (8.6 g, 0.088 mol) was then added to the sulfur dioxide solution.
The mixture was then cooled to 0° C.
To this mixture was added the diazonium salt solution portion-wise with vigorous stirring over a period of 30 minutes.
The reaction mixture was stirred at 0° C. for 1 h and then the mixture was allowed to warm to room temperature.
The mixture was stirred at room temperature for 2 h before it was quenched with ice water (500 mL).
The mixture was extracted with EtOAc (3*) and the extracts were washed with sat.
NaHCO3 and dried over anhydrous Na2SO4.
The solvent was removed in vacuo to afford an oily residue.
The residue was dissolved in THF (60 mL) and the solution was cooled to 0° C.
To this mixture was added a cold (0° C.) solution of sat. NH3 (50 mL) in MeOH portion-wise at such a rate that the internal reaction temperature was maintained below 10° C.
After the addition was complete, the mixture was allowed to warm to room temperature and was stirred for 1 h.
The solvent was removed in vacuo and the residue was dissolved in saturated aqueous sodium bicarbonate (60 mL) and washed with diethyl ether (80 mL).
The aqueous layer was acidified with concentrated HCl to pH to 1.
The resulting precipitate was collected by filtration and was dried in vacuo to afford 6-bromo-1,1-dioxo-1,2-dihydro-1λ6-benzo[d]isothiazol-3-one (2.1 g, 9percent yield).
1H NMR (300 MHz, CDCl3) δ 8.18 (d, J=1.8, 1H), 8.03 (dd, J=8.1, 1.8, 1H), 7.79 (d, J=8.1, 1H).
Reference: [1] Patent: US2011/98311, 2011, A1,
  • 5
  • [ 69321-56-8 ]
  • [ 62473-92-1 ]
Reference: [1] Arzneimittel-Forschung/Drug Research, 1996, vol. 46, # 10, p. 966 - 971
[2] Patent: WO2013/131408, 2013, A1,
  • 6
  • [ 106-38-7 ]
  • [ 62473-92-1 ]
Reference: [1] Patent: WO2013/131408, 2013, A1,
  • 7
  • [ 5794-88-7 ]
  • [ 29632-82-4 ]
  • [ 62473-92-1 ]
Reference: [1] Patent: US2011/98311, 2011, A1,
  • 8
  • [ 62473-92-1 ]
  • [ 10026-13-8 ]
  • [ 154607-01-9 ]
Reference: [1] American Chemical Journal, 1903, vol. 30, p. 508
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