A facile synthesis of α-chloroboronic esters via the base induced reaction of α,α-dichloromethyl methyl ether with hindered borinic esters
作者:Bruce A. Carlson、Jean-Jacques Katz、Herbert C. Brown
DOI:10.1016/s0022-328x(00)82340-2
日期:1974.3
Treatment of hindered borinic esters, R2 BOR′; with an equimolar quantity of α,α-dichloromethyl methyl ether and lithium triethylcarboxide yields the α-chloroboronic esters, R2 CHClB(OCH3)OR′, in excellent yields. In cases where the steric requirements of R are not sufficient, the steric requirements of R′ can be increased to achieve the synthesis.
处理受阻的硼酸酯,R 2 BOR';用等摩尔量的α,α-二氯甲基甲基醚和三乙基碳酸锂制备α-氯硼酸酯R 2 CHClB(OCH 3)OR',具有优异的产率。在R的空间要求不足的情况下,可以增加R'的空间要求以实现合成。