particularly dienylsilylboronates, that are functionalised building blocks in the synthesis of organic and natural products. The mechanism of this new reaction was proved to involve an insertion of alkyne into Ru-H bonds followed by an insertion of coordinated vinyl boronate into the Ru-C= bond and beta-hydrogen transfer to the metal to eliminate boryldiene or borylsilyldiene.
A new highly selective method for the synthesis of borasiloxanes through the O-borylation of silanols, disilanols, and disiloxanediols with vinylboronates in the presence of Ru0 complexes (mainly Ru3CO12) is described. The method leads to the formation of special compounds with a B–O–Si inorganic framework. When Ru0 complexes are used as a catalyst, no vinylboronate homocoupling is observed. A mechanism
vinyldioxaborolane and vinyldioxaborinane react regioselectively with olefins in the presence of RuHCl(CO)(PCy3)2 with the formation of functionalized vinylboron derivatives. The reaction opens a new catalytic route for preparation of organoboranes.
Copper chloride‐catalyzedaerobicoxidative annulation of N‐furfuryl‐β‐enaminones provides access to polysubstituted pyrroles and indoles. This protocol involves an unprecedented copper chloride‐catalyzedoxidative chlorination of furan and pyrrole rings with oxygen as the terminal oxidant.
A new, highly selective method for effective synthesis of boryl silyl ethers (borasiloxanes) via O-borylation of silanols with vinylboronates catalyzed by the Ru-H complexes [RuHCl(CO)(PCy3)2] and [RuHCl(CO)(PPh3)3] is described.