Michael addition of ethyl acetoacetate to α,β-unsaturated oximes in the presence of FeCl3: a novel synthetic route to substituted nicotinic acid derivatives
作者:Andrey M Chibiryaev、Norbert De Kimpe、Alexey V Tkachev
DOI:10.1016/s0040-4039(00)01391-5
日期:2000.10
The FeCl3-catalyzed reaction of α,β-unsaturated oximes with ethyl acetoacetate resulted in Michael addition followed by ring closure to produce substituted nicotinic acidderivatives in a very efficient way.
Unusual Ring Opening of Bicyclic Terpenes During Pd‐Catalyzed Coupling with Aromatic Halides
作者:Evgeniya S. Shutovskaya、Yulia P. Ustimenko、Alexey V. Tkachev、Julia V. Burykina、Alexander M. Agafontsev、Anastasiya V. Lastovka、Dmitriy N. Polovyanenko、Taisiya S. Sukhikh
DOI:10.1002/adsc.202300594
日期:2023.12.5
describe Pd-catalyzed cross-coupling reaction of α-pinene derivative – pinacarvone O-methyl oxime (1) with aryl halides (2). Surprisingly, the formation of the C−C coupling product was accompanied by an unexpected opening of the pinene bicyclic structure. The (Z)-2-aryl-4,4,5-trimethylcyclohexa-2,5-dien-1-one O-methyl oxime (3) was formed as the resulting product. The reaction conditions of the developed synthetic