Organoboron compounds conjugate additions

Scheme 3.3 Organoboron compounds used for rhodium-catalyzed conjugate addition [12-15].

Similar to organoboron reagents, silicon has drawn the attention of chemists for many years because of its low cost, large abundance, and nontoxic properties. However, conjugate addition with arylsilicon compounds was considered to be problematic because of their lower reactivity. These reagents work fine in the presence of air and water. Huang and Li [66], in 2001, also reported... 

It should be noted that in the 2000s, several other groups have developed metal-catalyzed conjugate addition of organoboron derivatives followed by asymmetric protonation. However, despite these important fundamental advances, the versatility of the final products did not lead to the synthesis of natural or bioactive compounds. 

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