Stereoselective Synthesis of Alkyl α-(1,3-Alkadien-2-yl)acetates and -propionates by Allene Claisen Rearrangement
作者:Ulrike Behrens、Christian Wolff、Dieter Hoppe
DOI:10.1055/s-1991-26534
日期:——
Configurationally homogeneous (4-hydroxy-1,2-alkadienyl) N,N-diisopropylcarbamates react with trialkyl orthocarboxylates to afford the title compounds stereoselectively. Stereochemical assignment of the highly substituted 1,3-alkadienes is accomplished NMR-spectroscopically by means of couplings constants 3 J(13C-1H) or 3 J (29Si-1H).