Lithium compounds as single site catalysts for hydroboration of alkenes and alkynes
作者:Milan Kumar Bisai、Sandeep Yadav、Tamal Das、Kumar Vanka、Sakya S. Sen
DOI:10.1039/c9cc05783h
日期:——
The hydroboration of alkenes and alkynes using easily accessible lithium compounds [2,6-di-tert-butyl phenolatelithium (1a) and 1,1′ dilithioferrocene (1b)] has been achieved with good yields, high functional group tolerance and excellent chemoselectivity. Deuterium-labeling experiments confirm the cis-addition of pinacolborane. The methodology has been further extended to myrcene, which undergoes
使用易于获得的锂化合物[2,6-二叔丁基酚盐锂(1a)和1,1'二硫代二茂铁(1b)]可以实现烯烃和炔烃的硼氢化,收率高,官能团耐受性高,化学选择性好。氘标记实验证实了频哪醇硼烷的顺式加成。该方法已进一步扩展至月桂烯,其经历了选择性的4,3-氢硼化。DFT计算提供了对该机制的见解。