10-Methylacridinium perchlorate (1) effectively promotes various reactions of ketene silyl acetals: aldol and Michael addition products are obtained with aldehydes, ketones, acetals, and α-enones. The reactions exhibit unusual dependency upon 1, namely the yields are excellent when a catalytic amount of 1 is employed whereas no desired products are accessible by the use of 1 in a stoichiometric quantity
AYI A. I.; CONDOM R.; WADE T. N.; GUEDJ R., J. FLUOR. CHEM., 1979, 14, NO 6, 437-454
作者:AYI A. I.、 CONDOM R.、 WADE T. N.、 GUEDJ R.
DOI:——
日期:——
DELAUNAY, J.;ORLIAC-LE, MOING A.;SIMONET, J., TETRAHEDRON, 44,(1988) N 23, C. 7089-7094
作者:DELAUNAY, J.、ORLIAC-LE, MOING A.、SIMONET, J.
DOI:——
日期:——
Anodic synthesis of butenolides from β-ethylenic esters double cyclization in the presence of olefins
作者:J. Delaunay、A. Orliac-Lemoing、J. Simonet
DOI:10.1016/s0040-4020(01)86077-4
日期:1988.1
Anodic oxidation of β-ethylenic esters yields butenolides . In the presence of 1-phenyl-1-propene or α,β-disubstituted indenones a double cyclization takes place to yield more complex butenolides