Improved processes for liberating boronic, RB(OR').sub.2, and borinic, RR'BOR', esters from their "ate" complexes, free of alcohol are provided. Pyrolysis of lithium organylborates LiRB(OR').sub.3 and LiRR'BOR', wherein R is an organyl group and R' is straight or branched-chain lower alkyl, directly yields the relatively volatile boronic and borinic esters in high purity, leaving behind a residue of lithium alkoxide. Treatment of the lithium organylborates with an appropriate acid halide cleanly liberates either volatile or non-volatile boronic or borinic esters, readily separated from the lower alkyl ester produced as a by-product. The novel compound lithium dimethylborohydride is also provided.
提供了一种改进的过程,用于从其“ate”络合物中解放出不含醇的
硼酸酯、RB(OR')2和
硼烷酸酯、RR'BOR'。
锂有机
硼酸盐LiRB(OR')3和LiRR'BOR'的热解,其中R是有机基团,R'是直链或支链低级烷基,直接产生相对挥发性的高纯度
硼酸酯和
硼烷酸酯,留下一定量的
锂烷氧化物残留物。用适当的酸卤化物处理
锂有机
硼酸盐可以干净地释放出易挥发或不易挥发的
硼酸酯或
硼烷酸酯,可以很容易地与产生的低级烷酸酯副产物分离。还提供了一种新的化合物
锂二甲基硼氢化物。