cis-to-trans Isomerization Promoted by Pyridine as a Crucial Step for the Selective Preparation of trans-Pt(SAr)(Cl)(PAr‘3)2
摘要:
The general strategy for the syntheses of trans-Pt(SAr)(Cl)(PAr'(3))(2) (1) (Ar = Ph, C6H4-2-Me, C6H4-3-OMe C(6)H(4-)2-F, etc.; Ar' = Ph, C6H4-4-OMe, C6H4-4-Me, and C6H4-4-CF3) by the reaction of cis-PtCl2(PAr'(3))(2) with ArSH has been developed. The mechanistic investigation suggested that isomerization of cis-1 into trans-1 promoted by the combined use of C6H6 as a solvent and pyridine as a base was the key to the successful preparation of 1.