Co-ordinatively unsaturated tungstacarbonyl species, formed either chemically or photochemically, react with alkynes H–CC–R to give, after solvolysis of presumed vinylidene complexes by R'OH, in the presence of SiO2, the fischer-type carbene complexes (CO)5WC(OR′)(CH2R).
化学或光
化学形式形成的配位不饱和
钨羰基物质,与
炔烃HC-CR反应,在SiO 2存在下,用R'OH将假定的亚
乙烯基配合物溶剂化后,得到费歇尔型卡宾配合物( CO)5 W C(OR')(CH 2 R)。