A Convergent Triflate Displacement Approach to (α-Monofluoroalkyl)phosphonates
摘要:
Treatment of primary alkyl triflates or iodides with the potassium salt of diethyl (alpha -fluoro-alpha -phenylsulfonyl methyl)phosphonate yields (alpha -fluoro-alpha -phenylsulfonylalkyl)phosphonate These can be cleanly desulfonated, in a matter of minutes, with Na(HS) in MeOH/THF/NaH2PO4. This two-step procedure complements previously reported triflate displacement approaches to alpha -nonfluorinated and alpha,alpha -difluorinated phosphonates.
A Convergent Triflate Displacement Approach to (α-Monofluoroalkyl)phosphonates
摘要:
Treatment of primary alkyl triflates or iodides with the potassium salt of diethyl (alpha -fluoro-alpha -phenylsulfonyl methyl)phosphonate yields (alpha -fluoro-alpha -phenylsulfonylalkyl)phosphonate These can be cleanly desulfonated, in a matter of minutes, with Na(HS) in MeOH/THF/NaH2PO4. This two-step procedure complements previously reported triflate displacement approaches to alpha -nonfluorinated and alpha,alpha -difluorinated phosphonates.
A Convergent Triflate Displacement Approach to (α-Monofluoroalkyl)phosphonates
作者:David B. Berkowitz、Mohua Bose、Nathan G. Asher
DOI:10.1021/ol015983z
日期:2001.6.1
Treatment of primary alkyl triflates or iodides with the potassium salt of diethyl (alpha -fluoro-alpha -phenylsulfonyl methyl)phosphonate yields (alpha -fluoro-alpha -phenylsulfonylalkyl)phosphonate These can be cleanly desulfonated, in a matter of minutes, with Na(HS) in MeOH/THF/NaH2PO4. This two-step procedure complements previously reported triflate displacement approaches to alpha -nonfluorinated and alpha,alpha -difluorinated phosphonates.