Reactivities of Sulfur and Selenium in Adduct Formation of (η5-Cyclopentadienyl)(1,2-diphenyl-1,2-ethylenedichalcogenolato)cobalt(III) Complexes with Ethyl Diazoacetate

Abstract

Abstract The reactivity and selectivity of S and Se of (η5-cyclopentadienyl)(1,2-diphenyl-1,2-ethylenedichalchogenolato)cobalt(III) in the alkylidene adduct formation with ethyl diazoacetate were studied. The relative reactivities of dithiolato, selenolatothiolato (1c), and diselenolato complexes are 1 : 26 : 400 at 40 °C. In contrast to the large difference in the reactivities in intermolecular competition, S and Se in 1c reacted with low intramolecular selectivity.