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钼和钨羰基二取代路易斯碱化合物是在有机金属化学中常用的中间体,用通常方法制备收率低且为各种取代异构体的混合物。虽有改进方法,但不适于大量制备。在这方面我们曾报导过一个非常适用的,由钼和钨氯化物与叔膦和CO反应制备M(CO)_4L_2型化合物的方法。
Molybdenum and tungsten carbonyl disubstituted Lewis base compounds are common intermediates in organometallic chemistry and are prepared in the usual manner in low yields and as mixtures of various substituted isomers. Although there are improvements, but not suitable for mass preparation. In this respect we have reported a very suitable method for the preparation of M (CO) _4L_2 compounds from the reaction of molybdenum and tungsten chlorides with tertiary phosphines and CO.