Chromium(II) mediated threo selective synthesis of homoallyl alcohols
作者:Tamejiro Hiyama、Keizo Kimura、Hitosi Nozaki
DOI:10.1016/s0040-4039(01)82859-8
日期:1981.1
Asymmetric Allyl- and Crotylboration with the Robust, Versatile, and Recyclable 10-TMS-9-borabicyclo[3.3.2]decanes
作者:Carlos H. Burgos、Eda Canales、Karl Matos、John A. Soderquist
DOI:10.1021/ja043612i
日期:2005.6.1
preparation of 6. The reagent gives predictable stereochemistry and exhibits an extremely high level of reagent control in the allylboration of d-glyceraldehyde acetonide. A simple and efficient procedure has been developed for the preparation of all four geometric and enantiomeric isomers of the B-crotyl-10-TMS-9-BBDs (10) from optically pure enantiomers of B-MeO-10-TMS-9-BBD (3). These reagents 10 also add