4-Nitrobenzenesulfonyl chloride → HCID 10228797, compound

HRID 2296939Notes

Reaction equation

[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]([CH2:17][CH:18]2[CH2:22][CH2:21][CH2:20][CH2:19]2)[C:9]([NH:11][C:12]2[S:13][CH:14]=[CH:15][N:16]=2)=[O:10])=[CH:4][CH:3]=1.C(N(CC)C(C)C)(C)C.[N+:32]([C:35]1[CH:40]=[CH:39][C:38]([S:41](Cl)(=[O:43])=[O:42])=[CH:37][CH:36]=1)([O-:34])=[O:33]>O1CCCC1>[CH:18]1([CH2:17][CH:8]([C:5]2[CH:4]=[CH:3][C:2]([NH:1][S:41]([C:38]3[CH:37]=[CH:36][C:35]([N+:32]([O-:34])=[O:33])=[CH:40][CH:39]=3)(=[O:42])=[O:43])=[CH:7][CH:6]=2)[C:9]([NH:11][C:12]2[S:13][CH:14]=[CH:15][N:16]=2)=[O:10])[CH2:22][CH2:21][CH2:20][CH2:19]1

Participants

Conditions

Temperature: 25 °C

Procedure

A solution of 2-(4-amino-phenyl)-3-cyclopentyl-N-thiazol-2-yl-propionamide (63.0 mg, 0.20 mmol) in tetrahydrofuran (10 mL) was treated with N,N-diisopropylethylamine (0.04 mL, 0.24 mmol) and 4-nitro-benzene sulfonyl chloride (49.0 mg, 0.20 mmol). The reaction mixture was stirred at 25° C. for 21 h. At this time, the reaction was concentrated in vacuo. Flash chromatography (Merck Silica gel 60, 230-400 mesh, 50/50 hexanes/ethyl acetate) afforded 3-cyclopentyl-2-[4-(4-nitro-benzenesulfonylamino)-phenyl]-N-thiazol-2-yl-propionamide (47.5 mg, 47.5%) as a yellow solid: mp 120-125° C.; FAB-HRMS m/e calcd for C23H24N4O5S2 (M+H)+ 501.1266, found 501.1264.

Workup

concentrationAt this time, the reaction was concentrated in vacuo

Sources & evidence

ORD record: ord-84c59e5eac0d4f5ba7c208191d8377a9
Source dataset: uspto-grants-2002_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06489485B2

Reaction notes

Loading…