Triethylamine → HCID 69357851, compound

Participants

Reaction Conditions

Reaction Steps

A suspension of 5-amino-isophthalic acid 1-tert-butyl ester 3-methyl ester (D79) (3.4 g, 13.5 mmol, 1 equiv) in CH2Cl2 (25 ml) was treated with NEt3 (2.32 g, 23 mmol, 1.1 equiv) and cooled to 0° C. 4-chlorobutyryl chloride (1.6 g, 15.7 mmol, 1.1 equiv) was added dropwise and the resulting solution was stirred at 0° C. for 3 h then allowed to warm to room temperature and washed with 2N aqueous HCl solution, dried over MgSO4 and concentrated in vacuo. The residue was triturated with iso-hexane and Et2O to give 5-(4-chloro-butanoylamino)-isophthalic acid 1-tert-butyl ester 3-methyl ester (D80) (4.5 g, 94%) as a white solid.

Provenance & Evidence