Butyl Formate → HCID 53685709, compound

Participants

Reaction Steps

A solution of the (S)-(5,7-difluoro-1,2,3,4-tetrahydronaphthalen-2-ylamino)acetonitrile in butyl formate (8.7M, 240 mL, 2.10 mol) was heated to reflux and stirred under nitrogen for 19 hours. The solvents were removed under reduced pressure, toluene was added and then evaporated. Drying gave (S)-N-(cyanomethyl)-N-(5,7-difluoro-1,2,3,4-tetrahydronaphthalen-2-yl)formamide as an oily residue (53.2 g). A stirring mixture of the formamide (53.2 g) and ethyl formate (12.4M, 48.7 mL, 0.604 mol) in 0.925 L of anhydrous THF was cooled to -15° C. A solution of potassium tert-butoxide in THF (1.0M, 302 mL, 0.302 mol) was added over 20 minutes and the mixture was stirred for 18 hours. Evaporation of the solvent gave potassium (S)-N-(1-cyano-2-oxyvinyl)-N-(5,7-difluoro-1,2,3,4-tetrahydronaphthalen-2-yl)formamide as a residue.

Provenance & Evidence