Triethylamine → 3,3a, 4,5-Tetrahydro-3a-methoxycarbonyl-N-[4-(trifluoromethyl)phenyl]-N-[N'-(1-methylethyl)-N'-(ethoxycarbonyl)aminosulfenyl]-2H-benz[g]indazole-2-carboxamide

HRID 232724Notes

Reaction equation

HRID 232724 reaction equation
[CH3:1][O:2][C:3]([C:5]12[CH2:13][CH2:12][C:11]3[CH:14]=[CH:15][CH:16]=[CH:17][C:10]=3[C:9]1=[N:8][N:7]([C:18]([NH:20][C:21]1[CH:26]=[CH:25][C:24]([C:27]([F:30])([F:29])[F:28])=[CH:23][CH:22]=1)=[O:19])[CH2:6]2)=[O:4].C(N(CC)CC)C.Cl[S:39][N:40]([CH:46]([CH3:48])[CH3:47])[C:41](=[O:45])[O:42][CH2:43][CH3:44]>C(Cl)Cl>[CH3:1][O:2][C:3]([C:5]12[CH2:13][CH2:12][C:11]3[CH:14]=[CH:15][CH:16]=[CH:17][C:10]=3[C:9]1=[N:8][N:7]([C:18]([N:20]([C:21]1[CH:22]=[CH:23][C:24]([C:27]([F:30])([F:28])[F:29])=[CH:25][CH:26]=1)[S:39][N:40]([CH:46]([CH3:48])[CH3:47])[C:41]([O:42][CH2:43][CH3:44])=[O:45])=[O:19])[CH2:6]2)=[O:4]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 189883493,3a,4,5-tetrahydro-3a-methoxycarbonyl-N-[4'-(trifluoromethyl)phenyl]-2H-benz[g]indazole-2-carboxamideHCID 20139494Ethyl (chlorosulfenyl)(1-methylethyl)carbamate

Product 1

HCID 883967153,3a, 4,5-Tetrahydro-3a-methoxycarbonyl-N-[4-(trifluoromethyl)phenyl]-N-[N'-(1-methylethyl)-N'-(ethoxycarbonyl)aminosulfenyl]-2H-benz[g]indazole-2-carboxamideYield 85.7%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of the title compound of Step B (2.0 g, 4.8 mmol) in 50 ml methylene chloride cooled to 0° C. was added triethylamine (1.0 g, 0.01 mol) and ethyl (chlorosulfenyl) (1-methylethyl)carbamate from Step D (1.4 g, 7.7 mmol). The mixture was allowed to warm to room temperature and stirred for one hour. The crude mixture was purified by silica column chromatography using ether-hexane (1:2) as eluent. The title compound (2.38 g) was obtained in about 90% purity (mp: 130°-134°). Extraction of the product with ether-hexane (2:1) gave 1.8 g of highly pure material mp: 139°-140° C.

Workup

  1. customThe crude mixture was purified by silica column chromatography

Sources & evidence

ORD record
ord-cf88f408c88a4f66943e37992993677b
Source dataset
uspto-grants-1997_01
Patent number
US05591764

Reaction notes

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