A new catalytic method for the synthesis of boroxanes
摘要:
A new Ru-H complex catalyzed O-borylation of boronic acids with vinylboronates leading to boroxane bond formation with evolution of ethylene is described. Under the optimum conditions, when [Ru(CO)Cl(H)(PPh3)(3)] and excess vinylboronate are used, the reaction gives exclusively the corresponding boroxane in high yield. The proposed mechanism of catalysis is supported by the results of the equimolar reaction of Ru-B complex with 1,3,2-dioxaborinan-2-ol. (C) 2010 Elsevier Ltd. All rights reserved.
Volatile Borates of Polyhydric Alcohols and the Activation of Boric Acid.
作者:Ralph Elliott Rippere、Victor K. La Mer
DOI:10.1021/j150426a003
日期:1943.3
Rippere; La Mer, Journal of Physical Chemistry, 1943, vol. 47, p. 209,215,223
作者:Rippere、La Mer
DOI:——
日期:——
Borylation of calix[4]resorcinols under ultrasonic irradiation
作者:I. S. Nizamov、R. R. Shamilov、G. R. Sabirzyanova、E. I. Nikitin、A. R. Burilov、M. A. Pudovik
DOI:10.1134/s107036321205009x
日期:2012.5
The use of ultrasonic irradiation in the reactions of trialkyl borates with octahydroxytetraoctyl[l (4)] metacyclophane allowed us obtaining tetraalkoxyboratocavitands with higher yields and under milder conditions. We first obtained 1,3,2-dioxaborolane and 1,3,2-dioxaborinane derivatives of tetraoctyl[l (4)]metacyclophane using ultrasonic irradiation. Boratocavitands were converted into the corresponding amine complexes with isobutylamine.