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Communication | Regular issue | Vol 29, No. 6, 1989, pp.1003-1004
Published online, 1st January, 1970
DOI: 10.3987/COM-89-4891
Intramolecular Cycloadditions with Isobenzofurans-VI. A Novel Entry into the Field of Annelated 1,2-Benzisoxazoles

Lutz Assmann and Willy Friedrichsen*

*Institut für Organische Chemie, Universität Kiel, Olshausenstrasse. 40, D-24098 Kiel, Germany

Abstract

Rh2 OAc4 catalyzed nitrogen extrusion from 5b yields 8 ; this novel route to an annelated isoxazole obviously proceeds through a furo[3,4-d]isoxazole of type 6 as an intermediate.