作者:Carl A. Busacca、Jon C. Lorenz、Nelu Grinberg、Nizar Haddad、Matt Hrapchak、Bachir Latli、Heewon Lee、Paul Sabila、Anjan Saha、Max Sarvestani、Sherry Shen、Richard Varsolona、Xudong Wei、Chris H. Senanayake
DOI:10.1021/ol0517832
日期:2005.9.1
to be outstanding reductants for secondary phosphine oxides (SPOs). All classes of SPOs can be readily reduced, including diaryl, arylalkyl, and dialkyl members. Many SPOs can now be reduced at cryogenic temperatures, and conditions for preservation of reducible functional groups have been found. Even the most electron-rich and sterically hindered phosphine oxides can be reduced in a few hours at 50-70
[反应:见正文]已发现氢化二异丁基铝(DIBAL-H)和三异丁基铝是仲氧化膦(SPO)的杰出还原剂。所有类别的SPO都可以轻松还原,包括二芳基,芳基烷基和二烷基成员。现在可以在低温下还原许多SPO,并发现了保存可还原官能团的条件。即使是最富电子和位阻的膦氧化物,也可以在50-70摄氏度的温度下在几小时内还原。这种新的还原方法与现有技术相比具有明显的优势。