Diethyl Ether → 2-[Bromo(nitro)methylidene]-3-(methanesulfonyl)-1,3-thiazinane

Participants

Reaction Steps

A solution of 1.6 g of bromine in 10 ml of methylene chloride was added drop-by-drop over a period of 10 minutes to a solution of 2.38 g of (1A) in 50 ml of methylene chloride at 0° C. and under a nitrogen blanket. The resulting mixture was stirred for a further 10 minutes, charcoaled, and stripped of solvent. The residue was dissolved in a minimum amount of methylene chloride, then ether was added to the solution, resulting in a gum. The gum was dissolved in methylene chloride, the solution was charged onto a flash chromatograph column (silica gel) and the product was eluted with methylene chloride, to give (1) on workup.

Provenance & Evidence