Provided are novel specific dipyridyl derivatives as a useful substance or an intermediate in the fields of pharmaceuticals, agrichemicals, ligands, silver halide photosensitive materials, liquid crystals, surfactants, electrophotography and organic electroluminescence.
Kagabu Shinzo, Ando Chihaya, Ando Junko, J. Chem. Soc. Perkin Trans, 1 (1994) N 6, S 739- 751
作者:Kagabu Shinzo, Ando Chihaya, Ando Junko
DOI:——
日期:——
US6603007B1
申请人:——
公开号:US6603007B1
公开(公告)日:2003-08-05
Thermal rearrangement of N-arylmethyl- and N-alkyl-2,2-dihalogenocyclopropyl imines
作者:Shinto Kagabu、Chihaya Ando、Junko Ando
DOI:10.1039/p19940000739
日期:——
temperatures. An ionic mechanism triggered by the halide ion dissociation is proposed for the thermalrearrangement on the basis of a study using deuteriated imine 15m, and the effects of additives and solvents. On the other hand, difluorocyclopropyl imine undergoes a homolytic cleavage of cyclopropane 1,3-bond with lower activation energy than the dichlorocyclopropyl imine, and afforded the N-alkyl-3-fluoropyrrole
synthesis of 3-azabicyclo[3.1.0]hex-2-enes has been developed by intramolecular cyclopropanation of readily available N-allyl enamine carboxylates. Two complementary reaction conditions, CuBr-mediated aerobic and CuBr2-catalyzed-PhIO2-mediated systems effectively induced stepwise cyclopropanation via carbocupration of alkenes. Oxidative cyclopropane ring-opening of 5-substituted 3-azabicyclo[3.1.0]hex-2-enes