Bromoacetyl bromide → Acetamide, 2-bromo-N-methyl-N-2-propynyl-

Participants

Reaction Conditions

Reaction Steps

A solution of 13.8 g (0.2 mol) of N-methylpropargylamine in 20 ml methylene chloride was added dropwise to a stirred and cooled (below 15° C) solution of 40.2 g (0.2 mol bromoacetyl bromide and 16 g (0.2 mol) sodium bicarbonate in 250 ml methylene chloride. The reaction mixture was allowed to warm to about 25° C and stirred for 2 hours. The reaction mixture was then filtered and evaporated under reduced pressure to give an oily residue. The residue was diluted with 150 ml ethyl ether to form a two-phase mixture consisting of an ether phase and a dark oil. The ether phase was separated, dried over magnesium sulfate, and evaporated to give 32.3 g of N-methyl-N-propargyl-alpha-bromoacetamide.

Provenance & Evidence