Relative reactivities of acetals and orthoesters in Lewis acid catalyzed reactions with vinyl ethers. A systematic investigation of the synthetic potential of acetals and orthoesters in electrophilic alkoxyalkylations of enol ethers
VON, DER BRUGGEN UWE;LAMMERS, ROSWITHA;MAYR, HERBERT, J. ORG. CHEM., 53,(1988) N 13, C. 2920-2925
作者:VON, DER BRUGGEN UWE、LAMMERS, ROSWITHA、MAYR, HERBERT
DOI:——
日期:——
Relative reactivities of acetals and orthoesters in Lewis acid catalyzed reactions with vinyl ethers. A systematic investigation of the synthetic potential of acetals and orthoesters in electrophilic alkoxyalkylations of enol ethers
作者:Uwe Von der Brueggen、Roswitha Lammers、Herbert Mayr
DOI:10.1021/jo00248a006
日期:1988.6
Substituent Effects on the Orientation of Diels-Alder Reactions. II
作者:Cirill Schmidt、S. D. Sabnis、Edith Schmidt、D. K. Taylor
DOI:10.1139/v71-062
日期:1971.2.1
influence of a terminally located methoxy is stronger than the effect of a terminal methyl group in the diene since only adduct 3 could be isolated. The influence of non-terminal substituents compared to terminal substituents in diene appears to be insignificant. This was demonstrated by obtaining only adduct 5 form the addition of 3-ethoxy-1,3-pentadiene (4) with 2,6-dimethylbenzoquinone (2). The following