Photochemistry of N-substituted spirooxaziridines derived from tetralone-l
作者:G.P. Johnson、B.A. Marples
DOI:10.1016/s0040-4039(01)81384-8
日期:1984.1
Photolyses of spirooxaziridines from tetralone-1 in which the N-substituent is syn to the aromatic ring are less regioselective than their anti-isomers suggesting the first formed N-O bond cleaved species has a significant life time.
Photochemistry of 2′-substituted 1,2,3,4-tetrahydronaphthalene-1-spiro-3′oxaziridines. Variable-temperature<sup>1</sup>H nuclear magnetic resonance spectroscopy of 1-substituted 1,3,4,5-tetrahydro-2H-1-benzazepin-2-ones
作者:Graham P. Johnson、Brian A. Marples
DOI:10.1039/p19880003399
日期:——
The lack of regioselectivity of photorearrangement of the title spiro-oxaziridines in which the N-substituent is syn to the aromatic ring suggests that the first formed N–O–bond-cleaved species has a significant lifetime allowing rotation (inversion) to compete with rearrangement. The energy barrier to ring inversion of the title tetrahydro-1-benzazepin-2-ones is significantly influenced by the steric