The purely aliphatic 2,3-dipropyl-2H-azirine (1) reacts on irradiation with a mercury high-pressure lamp through a Vycor filter with methyl trifluoroacetate or acetone to form 3-oxazolines 3a, b (65%) resp. 4 (14%) (Scheme 1). 9-Azabicyclo[6.1.0]non-1(9)-ene (5) on irradiation in the presence of the dipolarophiles methyl trifluoroacetate, methyl difluoroacetate, 1,1,1-trifluoro-propanone and acetone
New convenient synthesis of .beta.,.beta.-difluoro amines and .beta.,.beta.-difluoro-.alpha.-amino acid alkyl esters by the addition of hydrogen fluoride on 1-azirines
作者:Tamsir N. Wade、Rabia Kheribet
DOI:10.1021/jo01314a024
日期:1980.12
WADE T. N.; KHERIBET R., J. ORG. CHEM., 1980, 45, NO 26, 5333-5335