Dimethylformamide → HCID 86646773, compound

Participants

Reaction Steps

To an ice-cooled solution of N,N-dimethylformamide (8.5 mL, 110 mmol) in methylene chloride (100 mL) was added phosphorus oxychloride (8.0 mL, 87 mmol) dropwise, and the mixture was stirred for 0.5 h. The resulting mixture was poured into a cold (0° C.) suspension of 2-chloro-N-cyano-4-pyrimidinecarboximidamide (i.e., the product of Step A) (13 g, 73 mmol) in acetonitrile (200 mL). The resulting mixture was stirred overnight in an ice bath. The mixture was passed through a short silica gel pad, eluted with 30% ethyl acetate in hexanes, and concentrated under reduced pressure to give 7 g of the title compound as a white solid.

Provenance & Evidence