Utility of phosphonium-substituted ester enolates as synthetic intermediates. A novel trialkylphosphine-catalyzed [3,3] rearrangement of allylic acrylates
作者:Takeshi Hanamoto、Yoshiyasu Baba、Junji Inanaga
DOI:10.1021/jo00054a004
日期:1993.1
A novel Ireland-type [3,3] rearrangement which utilizes a catalytic amount of a trialkylphosphine with allylic acrylates has been developed as a synthetic entry into alpha-methylene-gamma,delta-unsaturated carboxylic acids.
Size-Exclusion Borane-Catalyzed Domino 1,3-Allylic/Reductive Ireland-Claisen Rearrangements: Impact of the Electronic and Structural Parameters on the 1,3-Allylic Shift Aptitude
reductive Ireland–Claisenrearrangement through borane‐mediated hydrosilylation is reported. The method employs a borane catalyst with a special structural design and affords access to synthetically relevant products with high diastereoselectivity. Depending on electronic and structural parameters, the reaction can be coupled with a 1,3‐allylic shift, thus the valence isomer of the Ireland–Claisen product