Ammonium Chloride → 2-(7-(4-Cyclopentyl-3-(trifluoromethyl)benzyloxy)-1,2,3,4-tetrahydrocyclopenta[b]indol-3-yl)acetic Acid

HRID 2040596Notes

Reaction equation

[C:1]([CH2:4][C:5]1(C([O-])=O)[C:9]2[NH:10][C:11]3[CH:12]=[CH:13][C:14]([O:17][CH2:18][C:19]4[CH:24]=[CH:23][C:22]([CH:25]5[CH2:29][CH2:28][CH2:27][CH2:26]5)=[C:21]([C:30]([F:33])([F:32])[F:31])[CH:20]=4)=[CH:15][C:16]=3[C:8]=2[CH2:7][CH2:6]1)([O-:3])=[O:2].[Na+].[Na+].[Cl-].[NH4+]>O>[CH:25]1([C:22]2[CH:23]=[CH:24][C:19]([CH2:18][O:17][C:14]3[CH:13]=[CH:12][C:11]4[NH:10][C:9]5[CH:5]([CH2:4][C:1]([OH:3])=[O:2])[CH2:6][CH2:7][C:8]=5[C:16]=4[CH:15]=3)=[CH:20][C:21]=2[C:30]([F:33])([F:31])[F:32])[CH2:29][CH2:28][CH2:27][CH2:26]1

Participants

Conditions

Temperature: 92 °C

Procedure

To a stirred solution of sodium 3-(carboxylatomethyl)-7-(4-cyclopentyl-3-(trifluoromethyl)benzyloxy)-1,2,3,4-tetrahydrocyclopenta[b]indole-3-carboxylate (16.5 g, 30.2 mmol) in water at 40° C. was added ammonium chloride solution (9.71%, 100 mL). The reaction was heated at 92° C. (bath) for 4.4 h. The mixture was refrigerated overnight, decanted and triturated with ice cold 6N HCl (100 mL). The solid was collected by filtration, washed with diluted HCl (100 mL) and dried overnight in a vacuum oven at 40° C. to give the title compound (8.5 g). LCMS m/z=458.3 [M+H]+.

Workup

customdecanted
customtriturated with ice cold 6N HCl (100 mL)
filtrationThe solid was collected by filtration
washwashed with diluted HCl (100 mL)
customdried overnight in a vacuum oven at 40° C.

Sources & evidence

ORD record: ord-8684f854811e4e59b3ac0d4b8bff8770
Source dataset: uspto-grants-2013_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08580841B2

Reaction notes

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