Method for Preparing Methoxyboranes and for Producing Methanol
申请人:Commissariat a l'Energie Atomique et aux Erergies Alternatives
公开号:US20180327430A1
公开(公告)日:2018-11-15
The present disclosure relates to a method for preparing methoxyboranes by dismutation of formic acid or at least one of the derivatives thereof or a mixture of formic acid and at least one of the derivatives thereof, in the presence of an organoborane, and optionally an organic or inorganic base.
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.
The reaction of alkynyllithium reagents with methyl dialkylborinates in tetrahydrofuran proceeds readily to form lithiummethyl alkynyldialkylborinates. Reaction of this ”rate“ complex with 1.3 equivalent of boron trifluoride diethyl etherate gives the alkynyldialkylboranes in essentially quantitative yield.
Hydroboration. 52. Monohaloborane-methyl sulfide adducts as new reagents for the hydroboration of alkenes. A convenient synthesis of dialkylhaloboranes and their derivatives for organic synthesis
作者:Herbert C. Brown、N. Ravindran、Surendra U. Kulkarni