Synthesis of 6,6-Difluorohomopiperazines via Microwave-Assisted Detosylation
作者:Eric Wellner、Helena Sandin、Leila Pääkkönen
DOI:10.1055/s-2003-36834
日期:——
[1,4]-Diazepan-6-ols are easily oxidized to ketones using Swern or Dess-Martin oxidation conditions. The fluorination of these [1,4]-diazepanones with diethylaminosulfur trifluoride (DAST) affords gem-difluorohomopiperazines. Detosylation under microwave conditions represents a rapid method to access the corresponding amines in high yields.