A Catalytic Approach for Enantioselective Synthesis of Homoallylic Alcohols Bearing a <i>Z</i>-Alkenyl Chloride or Trifluoromethyl Group. A Concise and Protecting Group-Free Synthesis of Mycothiazole
作者:Ryan J. Morrison、Farid W. van der Mei、Filippo Romiti、Amir H. Hoveyda
DOI:10.1021/jacs.9b11178
日期:2020.1.8
catalytic processes and is expected to facilitate the preparation of bioactive organic molecules. More specifically, Z-chloro-substituted allylic pinacolatoboronate is first obtained through stereoretentive cross-metathesisbetween Z-crotyl-B(pin) (pin = pinacolato) and Z-dichloroethene, both of which are commercially available. The organoboron compound may be used in the central transformation of the entire
with indiummetal, and their reactions with carbonyl compounds and electron-deficientalkenes were examined. The reactions of simple 1,1-diiodoalkanes with indiummetal gave no defined products but benzal iodide gave stilbene in a moderate yield. α-Halo organoindium reagents drived from α,α-dibromo carbonyl compounds gave oxiranes and cyclopropanes upon the reactions with aldehydes and alkenes, respectively