4-Chlorobenzenesulfonyl chloride → HCID 21075467, compound

HRID 1373743Notes

Reaction equation

[CH3:1][C:2]([CH3:16])([CH3:15])[CH2:3][NH:4][C@H:5]([C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=1)[C:6]([NH2:8])=[O:7].C(N(CC)CC)C.[Cl:24][C:25]1[CH:30]=[CH:29][C:28]([S:31](Cl)(=[O:33])=[O:32])=[CH:27][CH:26]=1>ClCCl.C(=O)(O)[O-].[Na+]>[Cl:24][C:25]1[CH:30]=[CH:29][C:28]([S:31]([N:4]([CH:5]([C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=2)[C:6]([NH2:8])=[O:7])[CH2:3][C:2]([CH3:16])([CH3:15])[CH3:1])(=[O:33])=[O:32])=[CH:27][CH:26]=1

Participants

Conditions

Temperature: 50 °C

Procedure

(R)-2-(2,2-Dimethyl-propylamino)-2-phenyl-acetamide (700 mg, 3.2 mmol) was dissolved in dichloromethane (15 mL) and chilled in an ice bath. The solution was treated with triethylamine (553 uL, 4.0 mmol) followed by 4-chlorobenzenesulfonyl chloride (671 mg, 3.2 mmol). After heating at 50° C. for 18 h, the mixture was cooled, diluted with aqueous sodium bicarbonate and extracted with dichloromethane. The combined organic extracts were dried (Na2SO4) and concentrated to an oil. Purification on a silica gel flash column (40% EtOAc in hexanes, eluent) afforded the title compound in 3% yield. 13CNMR (100 MHz, CDCl3) 28.6, 33.2, 62.7, 70.0, 128.8, 129.0, 121.1, 129.2, 130.7, 133.6, 138.7, 139.0, 172.7. MS 395.1 m/z (M+1).

Workup

temperaturechilled in an ice bath
temperaturethe mixture was cooled
extractionextracted with dichloromethane
dry with materialThe combined organic extracts were dried (Na2SO4)
concentrationconcentrated to an oil
customPurification on a silica gel flash column (40% EtOAc in hexanes, eluent)

Sources & evidence

ORD record: ord-da8ede6e0eda4d10ab9ceed63ff1fdff
Source dataset: uspto-grants-2007_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07163942B2

Reaction notes

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