Synthesis of 1,1-Organodiboronates
via Rh(I)Cl-Catalyzed Sequential Regioselective Hydroboration
of 1-Alkynes
作者:Kohei Endo、Takanori Shibata、Munenao Hirokami
DOI:10.1055/s-0028-1088131
日期:——
A Rh(I)Cl-DPPB-complex-catalyzed sequential hydroboration of aryl alkynes and aliphatic alkynes was achieved. The reaction proceeded with almost perfect regioselectivity to afford 1,1-organodiboronate compounds in moderate to good yield.
Ring opening alkylation of cyclic ethers with α-halogenoalkyllithiums in the presence of boron trifluoride–diethyl ether
作者:Toshiro Imai、Shinya Nishida、Takashi Tsuji
DOI:10.1039/c39940002353
日期:——
It is demonstrated for the first time that α-halogenoalkyllithium reagents can be utilized for ring opening alkylation of various oxiranes, oxtane and oxolane (THF) in the presence of borontrifluoride–diethylether at low temperatures.
Reactions of borinic esters with (1,1-dichloroalkyl)lithium. A facile synthesis of tertiary carbinols
作者:Bai Junchai、Zhou Weike、Ding Hongxun
DOI:10.1016/0022-328x(89)87060-3
日期:1989.5
The reaction of various borinic esters with (1,1-dichloroalkyl)lithium, LiCRCl2 (R = phenyl, methyl), followed by the treatment of base and hydrogen peroxide is a facile route to tertiary carbinols.
Ring Opening Alkylation of Tetrahydrofuran with Some Heterosubstituted Organolithium Reagents by the Aid of Boron Trifluoride Etherate
作者:Toshiro Imai、Tomoki Muramoto、Takashi Tsuji
DOI:10.1246/cl.1995.355
日期:1995.5
Organolithium reagents stabilized by halogeno, thio, silyl, vinyl and/or phenyl substituent(s) can cleave THF effectively under the influence of boron trifluoride etherate at lower temperatures. Th...
Reactions of Organoboron Compounds with Phenyl(bromodichloromethyl)mercury. The Conversion of C<sub>n</sub>-Terminal Olefins to C<sub>2n-1</sub>-Internal Olefins