CHBr3/TiCl4/Mg as an Unusual Nucleophilic CBr2 Carbenoid: Effective and Chemoselective Dibromomethylenation of Aldehydes and Ketones
作者:Yeshwant Ramchandra Bhorge、Cheng-Ta Chang、Su-Haur Chang、Tu-Hsin Yan
DOI:10.1002/ejoc.201200457
日期:2012.9
We report that instead of using CBr4, CHBr3 can serve as a highly nucleophilic dibromomethylene carbenoid in chemoselective carbonyl dibromomethylenation. Successful application of the dibromomethylenation to various carbonyl compounds such as enolizable and sterically hindered ketones by using the CHBr3/Mg/TiCl4 system highlights the weakly basic nature, extraordinary reactivity, and synthetic versatility
Palladium/Charcoal-Catalysed Olefin Reduction for the Simple and Efficient Synthesis of Substituted gem-Diborylalkanes
作者:Santanu Panda、Kanak Kanti Das、Debraj Ghorai、Somenath Mahato
DOI:10.1055/a-2147-1336
日期:2023.11
bifunctional reagents that can be applied for the synthesis of simple to complex skeletons. Herein, we report a Pd-catalysed hydrogenation method for the synthesis of gem-diborylalkanes from the corresponding gem-diborylalkenes, which are themselves prepared from the corresponding aldehydes and ketones using known procedures. In addition, transformations of two representative gem-diborylalkane products