作者:Carolina Sánchez、Xavier Ariza、Josep Cornellà、Jaume Farràs、Jordi Garcia、Jordi Ortiz
DOI:10.1002/chem.201001563
日期:——
All‐ene one! Three out of four stereoisomers of 2‐vinyl‐1,3‐diols can be obtained from a single allene. A simple variation of the reaction conditions modifies the stereochemical outcome of the addition of an allene to an aldehyde via hydroboration. Stereocontrol is dependent upon the order in which the reagents are mixed (leading to E or Z boron species) and the type of aldehyde (aliphatic or aromatic)
全烯!2-乙烯基-1,3-二醇的四个立体异构体中有三个可以从一个烯丙基得到。反应条件的简单变化改变了通过氢硼化将丙二烯加成到醛中的立体化学结果。立体控制取决于试剂混合的顺序(导致E或Z硼物种)和所用醛的类型(脂族或芳族)。