tert-Butyl carbazate → 5-(2-(Tert-butoxycarbonyl)hydrazono)-5-(4-fluorophenyl)pentanoic acid

Participants

Reaction Conditions

Reaction Steps

Step AAG (1): A mixture of tert-butyl hydrazinecarboxylate (1.45 g, 11.0 mmol) and 5-(4-fluorophenyl)-5-oxopentanoic acid (2.1 g, 10 mmol) in THF (20 mL) was stirred at 50° C. for 16 h. The reaction mixture was concentrated in vacuo to afford 5-(2-(tert-butoxycarbonyl)hydrazono)-5-(4-fluorophenyl)pentanoic acid (3.2 g, 9.87 mmol, 99% yield). LC-MS (M+H)+ 325.24. The crude product was used for subsequent chemistry without purification.

Provenance & Evidence