作者:Philippe Renaud、Cyril Ollivier、Philippe Panchaud
DOI:10.1055/s-2001-16095
日期:——
carboxylic acids into homoallylic alcohols under remarkably mild and selective conditions is described. The triethylammonium salts of alkanoic acids are treated with Bu3P/PhSeCl to afford the corresponding acyl selenides that are reduced to aldehydes by tributyltin hydride under radical conditions. Direct in situ trapping of the aldehydes by allylboronates affords the desired homoallylic alcohols.
Synthesis 2001, No. 10, 30 07 2001。文章标识符:1437-210X,E;2001,0,10,1573,1578,ftx,en;Z02801SS.pdf。© Georg Thieme Verlag Stuttgart · 纽约 ISSN 0039-7881 摘要:描述了在非常温和和选择性的条件下将羧酸转化为高烯丙醇的一锅法。链烷酸的三乙基铵盐用 Bu3P/PhSeCl 处理,得到相应的酰基硒化物,这些酰基硒化物在自由基条件下被氢化三丁基锡还原为醛。通过烯丙基硼酸盐直接原位捕获醛得到所需的高烯丙醇。使用酒石酸盐改性的烯丙基硼酸盐制备光学活性醇是可能的,并且对映选择性与使用分离的醛时获得的相似。