Hydroboration diboration

I 7 Hydroboration, Diboration, Silylboration and Stannylboration Tab. 1-3 Isomerization to the Terminal Carbon 1. HBX2/catalyst... 

Miyaura, N. Hydroboration, Diboration, Silylboration and Stannylboration. In Catalytic Heterofunctionalization-, Togni, A., Griitzmacher, H., Eds. Wiley-VCH Weinheim 2001 pp 1-47. 

Hydroboration, diboration, silylboration, and stannylboration reactions with participation of heterocycles 01MI38. 

The insertion of alkenes and alkynes into M-E (E = SiRa, SnR3, BR2) is not substantially different from the insertion into M-H or M-C bonds. The same orbital considerations hold in these cases (see Section 6.2.1) and theoretical methods have been applied to analyze these processes, generally in the context of mechanistic studies of catalytic reactions where this may be an important step (hydrosilation, hydroboration, diboration, silylstannation, etc.). Table 6.11 contains some calculated activation energies for insertion of ethylene and alkynes into M-ER bonds of comparable systems. The balance of bond breaking/bond making is less favorable for M-Si than for M-C or M-H bonds. Moreover, the directionality of the 0(M-Si) bonds is detrimental for insertion as discussed when... 

This chapter focuses on the subset of these reactions that have been studied most intensively and that draw from the stoichiometric reactions presented earlier in this text. Thus, the first sections of this chapter highlight certain aspects of hydrocyanation, hydrosilylation, disilylation, hydroboration, diboration, silylborations, and hydroami-nation. The last section presents aspects of palladium-catalyzed oxidation and metal-catalyzed oxidative amination of olefins. 

Transition-Metal-Catalyzed Hydroboration, Diboration, Silylboration, and Stannylboration... 

---