Preparation and Physical Properties of Sulfur Compounds Related to Petroleum. VI. endo-4,7-Methano-cis-2-thiahydrindan and endo-4,7-Ethano-cis-2-thiahydrindan
The hydroformylation of 1-alkenes was efficiently catalyzed by PtCl2–diphosphine–SnX2 systems whose diphosphines were 1,4-bis(diphenylphosphino)butane derivatives with rigid ring skeletons. The effects of the structure of diphosphines, the P/Pt atomic ratio, the sort of tin(II) halide or solvent, the reaction variables, and the structure of olefins on the relative rate and the product distribution