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Intramolecular cycloaddition reactions involving nitrile sulphides

✍ Scribed by Peter A. Brownsort; R.Michael Paton; Alan G. Sutherland

Publisher: Elsevier Science
Year: 1985
Tongue: French
Weight: 189 KB
Volume: 26
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)89234-5

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✦ Synopsis

ortho-(Phenylpropioloxy)benzonitrile sulphide, generated in situ by thermal decarboxylation of the oxathiazolone Cl), undergoes intramolecular 1,3-dipolar cycloaddition forming the chromenoisothiazole (48); ortho-cinnamoylbenzonitrile sulphides also yield (4), together with nitrile. chromenoquinoline and aminochromene by-products.

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