Silver‐Catalyzed Oxyphosphorylation of Unactivated Alkynes
作者:Binbin Liu、Qingmin Song、Zhaohong Liu、Zikun Wang
DOI:10.1002/adsc.202100226
日期:2021.7
Here, we describe an application of hydroazidation in the instant activation of alkynes for achieving the oxyphosphorylation of unactivated alkynes with diarylphosphinoyl radicals under mild reaction conditions. This reaction provides a method for accessing β-ketophosphine oxides and phosphorus-containing pyrroles.
Tin(II) chloride catalyzed addition of diazo sulfones, diazo phosphine oxides, and diazo phosphonates to aldehydes.
作者:Christopher R. Holmquist、Eric J. Roskamp
DOI:10.1016/s0040-4039(00)91877-x
日期:1992.2
Diazo sulfones, diazo phosphineoxides, and diazo phosphonates add to aldehydes in the presence of a catalytic amounts of tin(II) chloride to yield β-keto sulfones, β-keto phosphineoxides, and β-keto phosphonates, respectively. Reactions with primary aldehydes proceed in higher yields, 53–79%, than those of secondary aldehydes, 42–56%. Reactions with tertiary aldehydes, which are more sterically encumbered