Benzyloxyamine hydrochloride → 1-(Benzyloxyimino-methyl)-cycloheptanecarboxylic acid methyl ester

Participants

Reaction Steps

A mixture of 1-formyl-cycloheptanecarboxylic acid methyl ester from Preparation 34 (35.6 mmol theoretical), sodium acetate (5.84 g, 72 mmol) and O-benzylhydroxylamine hydrochloride (11.36 g, 72 mmol) were stirred in methanol (71 mL) for 2 h. The methanol was removed in vacuo and the residue partitioned between water and EtOAc. The aqueous phase was extracted with EtOAc (50 mL×5). The combined organic extracts were dried (MgSO4) and were evaporated in vacuo. Purifiaction by flash column chromatography using an eluting sytem of hexanes/EtOAc (99:1) provided the title compound as a clear colorless oil (5.22 g, 51%). MH+290.

Provenance & Evidence