Both 2:1 and 1:1 couplings of alkylacetylenes with secondary amines were achieved using 8-quinolinolato rhodium catalysts and CsF. The 2:1/1:1 selectivity was switched by choosing the reaction solvent. In DMA, an unprecedented 2:1 coupling reaction of alkylacetylenes with amines proceeded to give 2-aminodiene products. One-pot 2:1 coupling/reduction provided rapid access to various allylamines, while
Hydrogen telluride was found to reduce imines and enamines to the corresponding amines under mild conditions. As an application of this reduction,a new method for reductive alkylation of primary and secondary amines with ketones or aldehydes has been developed.
Diels-Alder Reaction of 1,2,3-Triazine with Aldehyde Enamine
作者:Junko Koyama、Tamaki Ogura、Kiyoshi Tagahara
DOI:10.3987/com-94-6727
日期:——
The Diels-Alder reaction of 4-methyl-1,2,3-triazine with several aldehyde enamines was carried out to afford 2,5-disubstituted pyridines. As an application of this method, we accomplished the synthesis of alkaloid, fusaric acid.