Sodium Nitrite → HCID 67071581, compound

Participants

Reaction Steps

Sodium nitrite (154 mg, 2.23 mmol) was dissolved in 2.68 ml of concentrated sulfuric acid at 0° C. Then, N—{(S)-3-[4-(5-aminopyridin-2-yloxy)phenyl]-1-methylpropyl}-acetamide trifluoroacetate (832 mg, 2.01 mmol) in 5 ml of acetic acid was slowly added dropwise. After 1 h the ice bath was removed and stirring was continued for an hour. The reaction mixture was added dropwise to 100 ml of boiling water, the mixture was stirred for 1 h and, after cooling, extracted with ethyl acetate. The precipitated solid was filtered off and the filtrate was concentrated and purified by preparative HPLC (PR18, acetonitrile/water 0.1% TFA). Yield: 153 mg (37%), M+H+: 301.13.

Provenance & Evidence