Stereoselective Addition of Carboxylic Acids to Electron Deficient Acetylenes Catalyzed by the PdMo3S4 Cubane-Type Cluster

Article abstract of DOI:10.1016/00404-0399(50)1067R-

The mixed-metal sulfide cubane-type cluster complex 3 (1; tacn = 1,4,7-triazacyclononane) was found to be a highly efficient and selective catalyst for the addition of carboxylic acids to acetylenes with electron-withdrawing groups.The corresponding trans addition products were exclusively obtained in good yields under mild reaction conditions in the presence of a catalytic amount of triethylamine.