Synthesis, structure and reactivity to nucleophiles of 3-benzylidene and 3-ethylidene-2,3-dihydro-2-methyl-1,2-benzothiazin-4-one 1,1-dioxides
Articolo
Data di Pubblicazione:
1986
Citazione:
Synthesis, structure and reactivity to nucleophiles of 3-benzylidene and 3-ethylidene-2,3-dihydro-2-methyl-1,2-benzothiazin-4-one 1,1-dioxides / P. Dalla Croce, D. Del Monaco, C. La Rosa. - In: JOURNAL OF THE CHEMICAL SOCIETY. PERKIN TRANSACTIONS. I. - ISSN 0300-922X. - (1986), pp. 299-302.
Abstract:
A new approach to (Z)-3-benzylidene- and 3-ethylidene-2,3-dihydro-2-methyl- 1,2-benzothiazin-4-one 1,1-dioxides (4) starting from the corresponding 3-acyl derivatives (1) is described. A hypothesis, based on 13C n.m.r. data, that products (4) may be considered as α,β-unsaturated carbonyl systems is confirmed experimentally by their chemical behaviour. Reaction with various nucleophiles such as hydrazine, sulphur ylides, and enamines leads to formation of polynuclear heterocyclic systems containing the 1,2-benzothiazine 1,1-dioxide skeleton.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
P. Dalla Croce, D. Del Monaco, C. La Rosa
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