Trifluoroacetic acid → [2-(4-{1-ethyl-1-[4-(3-hydroxy-4,4-dimethyl-pentyl)-3-methyl-phenyl]-propyl}-2-methyl-phenyl)-thiazol-4-yl]-acetic Acid Methyl Ester

HRID 546932Notes

Reaction equation

HRID 546932 reaction equation
FC(F)(F)C(O)=O.[CH2:8]([O:10][C:11](=[O:52])[CH2:12][C:13]1[N:14]=[C:15]([C:18]2[CH:23]=[CH:22][C:21]([C:24]([C:29]3[CH:34]=[CH:33][C:32]([CH2:35][CH2:36][CH:37]([O:42][Si](C(C)(C)C)(C)C)[C:38]([CH3:41])([CH3:40])[CH3:39])=[C:31]([CH3:50])[CH:30]=3)([CH2:27][CH3:28])[CH2:25][CH3:26])=[CH:20][C:19]=2[CH3:51])[S:16][CH:17]=1)C>ClCCl>[CH3:8][O:10][C:11](=[O:52])[CH2:12][C:13]1[N:14]=[C:15]([C:18]2[CH:23]=[CH:22][C:21]([C:24]([CH2:27][CH3:28])([C:29]3[CH:34]=[CH:33][C:32]([CH2:35][CH2:36][CH:37]([OH:42])[C:38]([CH3:40])([CH3:41])[CH3:39])=[C:31]([CH3:50])[CH:30]=3)[CH2:25][CH3:26])=[CH:20][C:19]=2[CH3:51])[S:16][CH:17]=1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 57709067{2-[4-(1-{4-[3-(t-butyl-dimethyl-silanyloxy)-4,4-dimethyl-pentyl]-3-methyl-phenyl}-1-ethyl-propyl)-2-methyl-phenyl]-thiazol-4-yl}-acetic Acid Ethyl Ester

Product 1

HCID 57443500[2-(4-{1-ethyl-1-[4-(3-hydroxy-4,4-dimethyl-pentyl)-3-methyl-phenyl]-propyl}-2-methyl-phenyl)-thiazol-4-yl]-acetic Acid Methyl EsterYield 95.4%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Trifluoroacetic acid (0.30 mL) was added to a solution of {2-[4-(1-{4-[3-(t-butyl-dimethyl-silanyloxy)-4,4-dimethyl-pentyl]-3-methyl-phenyl}-1-ethyl-propyl)-2-methyl-phenyl]-thiazol-4-yl}-acetic acid ethyl ester (Example 69-(1); 44.4 mg, 0.0683 mmol) in dichloromethane (1.7 mL) at room temperature, and the mixture was stirred at room temperature for one hour. The solvent in the reaction solution was distilled off under reduced pressure. The residue was purified by silica gel chromatography (hexane/ethyl acetate=4/1) to give the title compound (34.0 mg, 93%).

Workup

  1. distillationThe solvent in the reaction solution was distilled off under reduced pressure
  2. customThe residue was purified by silica gel chromatography (hexane/ethyl acetate=4/1)

Sources & evidence

ORD record
ord-19863b66d53c447ab5cef83c46badc97
Source dataset
uspto-grants-2011_05
Patent number
US07935688B2

Reaction notes

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