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.
Oiso
Shigeru
S
Graduate School of Pharmaceutical Sciences, Kumamoto University, Japan.
Eto
Masashi
M
Yoshitake
Yasuyuki
Y
Harano
Kazunobu
K
D018360:Crystallography, X-Ray; D003500:Cyclization; D005030:Ethylenes / Q000737:chemistry*; D007659:Ketones / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D008968:Molecular Conformation; D011725:Pyridines / Q000737:chemistry*; D013055:Spectrophotometry, Infrared
D005030:Ethylenes; D007659:Ketones; D011725:Pyridines; C008223:ketene