Lithium diorganocuprates add across the triple bond of substituted and non-substituted acetylenic acetals and ketals to give dialkenylcuprates, which can be decomposed into alkoxyallenes or may be trapped with a variety of electrophiles, such as alkyl, alkenyl, alkynyl and aryl halides. They may also undergo conjugate addition to α-βunsaturated esters and ketones. The method is used for the synthesis
GERMON, C.;ALEXAKIS, A.;NORMANT, J. F., BULL. SOC. CHIM. FR., 1984, N 9-10, 377-389
作者:GERMON, C.、ALEXAKIS, A.、NORMANT, J. F.
DOI:——
日期:——
Vinyl-copper derivatives XII : Stereospecific synthesis of allylic amines by aminomethylation of organocopper reagents
作者:C. Germon、A. Alexakis、J.F. Normant
DOI:10.1016/0040-4039(80)80172-9
日期:1980.1
the carbocupration or hydroalumination of alkynes followed by amino-methylation yields allylic amines. The stereochemical integrity of the alkenyl moiety is completely retained in both cases.