5-Amino-2-chlorobenzoic acid → HCID 14988369, compound

Participants

Reaction Conditions

Reaction Steps

A suspension of 6.90 g (0.04 mole) of 5-amino-2-chlorobenzoic acid in 100 ml of 1,2-dimethoxyethane was mixed with a solution of 5.08 g (0.02 mole) of 3,5-di-t-butyl-4-hydroxybenzoyl chloride in 100 ml of 1,2-dimethoxyethane, and the mixture was stirred at 25° C. for about 72 hours. The reaction mixture was heated gently for 30 minutes and then allowed to cool before being filtered to remove the hydrochloride salt of the excess starting amine. The filtrate was concentrated under vacuum and then diluted with water. The resulting precipitate was collected, and was then recrystallized twice from a mixture of ethanol and water to give 2.8 g of off-white solid N0(3-carboxy-4-chlorophenyl)-3,5-di-t-butyl-4-hydroxybenzamide, m.p. 265°-267° C. Analysis: Calculated for C22H26NO4Cl: %C, 65.4; %H, 6.5; %N, 3.4; Found: %C, 65.8; %H, 6.6; %N , 3.5.

Provenance & Evidence