4,3-ADDITIONS TO α,β-UNSATURATED KETONES VIA η2 C=C BINDING TO A RUTHENIUM COMPLEX.

Article abstract of DOI:10.1016/S0040-4039(00)82442-9

The *Ru(CO)2>⁺ fragment (Cp^* = η⁵-C5Me5) binds α,β-unsaturated ketones in an η²-C=C fashion.The resulting complex is subject to attack by H^- at the 4-position, leaving the ruthenium bound to the substrate at the 3-position.The Ru-C bond, formed in this way, can be cleaved to give a variety of 4,3-addition products.