Substituted 1-benzyl-4-(benzylidenimino)-4-phenylazetidin-2-ones: Synthesis, thermal and photochemical reactions
作者:Elisabetta Rossi、Giorgio Abbiati、Elena Pini
DOI:10.1016/s0040-4020(99)00325-7
日期:1999.5
The title compounds were synthesised from 1,3-diazabuta-1,3-dienes and ketenes. Thermal and photochemical ring expansion reactions to 5,6-dihydro-3H-pyrimidin-4-ones are also described.
Pericyclic Reaction of Ketenes with Cascade Reaction Products of Pyridine N-Oxides and Dipolarophiles. X-Ray Structures of the Adducts and Formation Mechanism
The structures of the adducts derived from the reactions of substituted ketenes with dihydropyridine derivatives have been clarified by single crystal X-ray analyses and the formation mechanism is discussed on the basis of the reaction-path calculations by semiempirical and density functional theory (DFT) molecular orbital methods.