Tetrahedron

Isothiazoles. Part IV. Cycloaddition reactions of diaryl-oxazolones and münchnones to 3-diethylamino-4-(4-methoxyphenyl)-isothiazole 1, 1-dioxide: a new synthesis …

P Baggi, F Clerici, ML Gelmi, S Mottadelli

Index: Baggi; Clerici; Gelmi; Mottadelli Tetrahedron, 1995 , vol. 51, # 8 p. 2455 - 2466

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Citation Number: 20

Abstract

3-Diethylamino-4-(4-methoxyphenyl)-isothiazole 1, 1-dioxide (3) readily reacts with oxazolones 2 and münchnones 7 affording with satisfactory yield 3-diethylamino-4, 6-diaryl- 3a, 4-dihydro-3a-(4-methoxyphenyl)-6aH-pyrrolo [3, 4-d] isothiazole 1, 1-dioxides 4 and 3- diethylamino-4, 6-diaryl-5-alkyl-3a-(4-methoxyphenyl)-pyrrolo [3, 4-d] isothiazole 1, 1- dioxides 8, respectively. The behaviour of the cycloadducts towards elevated ...