144492-91-1Relevant articles and documents
Regioselectivity in the Reaction of Tantalum-Unsymmetrical Acetylene Complexes with Carbonyl Compounds. Stereoselective Preparation of 1-Alkenyl Sulfides, α,β-Unsaturated Esters, and Amides
Kataoka, Yasutaka,Miyai, Jiro,Tezuka, Makoto,Takai, Kazuhiko,Utimoto, Kiitiro
, p. 6796 - 6802 (2007/10/02)
Tantalum-alkyne complexes, derived by treatment of alkynes with low-valent tantalum (TaCl5 and zinc), react in situ with carbonyl compounds to give (E)-allylic alcohols stereoselectively.When unsymmetrical acetylenes are employed in the reaction, two regi