N-p-Tolyl and N-phenylketenimines (1) react with thiobenzophenones (2) by a formal 4 + 2 cycloaddition to give substituted 4H-3,1-benzothiazines (4) whose structures have been confirmed by an X-ray diffraction study, whereas the N-mesitylketenimine (5) leads to the 2-iminothietan (6) by a 2 + 2 cycloaddition.
Cycloaddition of N-arylketenimines to thiobenzophenones. Formation of 4H-3,1-benzothiazine and 2-iminothietan derivatives
GILLI, GastonePenultimo
;
1977
Abstract
N-p-Tolyl and N-phenylketenimines (1) react with thiobenzophenones (2) by a formal 4 + 2 cycloaddition to give substituted 4H-3,1-benzothiazines (4) whose structures have been confirmed by an X-ray diffraction study, whereas the N-mesitylketenimine (5) leads to the 2-iminothietan (6) by a 2 + 2 cycloaddition.File in questo prodotto:
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