Benzenesulfonyl chloride → HCID 66850754, compound

HRID 873668Notes

Reaction equation

HRID 873668 reaction equation
[CH2:1]([O:3][C:4]([N:6]1[CH2:18][CH2:17][C:9]2[NH:10][C:11]3[CH:12]=[CH:13][CH:14]=[CH:15][C:16]=3[C:8]=2[CH2:7]1)=[O:5])[CH3:2].[OH-].[Na+].[C:21]1([S:27](Cl)(=[O:29])=[O:28])[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1>C(Cl)Cl.O>[CH2:1]([O:3][C:4]([N:6]1[CH2:18][CH2:17][C:9]2[N:10]([S:27]([C:21]3[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=3)(=[O:29])=[O:28])[C:11]3[CH:12]=[CH:13][CH:14]=[CH:15][C:16]=3[C:8]=2[CH2:7]1)=[O:5])[CH3:2]

Participants

6

Reactant 3

HCID 7369Benzenesulfonyl chlorideHCID 14798Sodium HydroxideHCID 1756750Ethyl 1,3,4,5-tetrahydro-2H-pyrido[4,3-b]indole-2-carboxylate

Product 1

HCID 66850754HCID 66850754, compound

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6344DichloromethaneSolvent

Procedure

A solution of 3 g of 1,3,4,5-tetrahydro-pyrido[4,3-b]indole-2-carboxylic acid ethyl ester in methylene chloride (50 mL) is treated with 0.982 g of sodium hydroxide and stirred and room temperature overnight. Benzenesulfonylchloride (6.30 mL) is added to the reaction and stirred at room temperature overnight. The reaction mixture is diluted with water (250 mL) and extracted with methylene chloride. The organics are combined, washed with water then a saturated sodium chloride solution, dried over sodium sulfate and concentrated in vacuo. The residue is loaded on Celite and purified by silica gel chromatography (1:1 hexanes/ethyl acetate) to give 5-benzenesulfonyl-1,3,4,5-tetrahydro-pyrido[4,3-b]indole-2-carboxylic acid ethyl ester as a yellow powder. MS (m/z): 385 (M+1).

Workup

  1. stirringstirred at room temperature overnight
  2. extractionextracted with methylene chloride
  3. washwashed with water
  4. dry with materiala saturated sodium chloride solution, dried over sodium sulfate
  5. concentrationconcentrated in vacuo
  6. custompurified by silica gel chromatography (1:1 hexanes/ethyl acetate)

Sources & evidence

ORD record
ord-c73201a554b94b49bba0063994078d13
Source dataset
uspto-grants-2015_03
Patent number
US08975439B2

Reaction notes

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