… Entry to Linearly-Fused Dihydrobenzocyclobutene-1, 2-diones and Benzocyclobutene-1, 2-diones via Annulation of 1, 2-Bis (methylene) carbocycles with 3-Chloro-3- …

AH Schmidt, G Kircher, M Willems

Index: Schmidt, Arthur H.; Kircher, Gunnar; Spring, Mathias; Hendriok, Markus W.; Kuenz, Christian Advanced Synthesis and Catalysis, 1997 , vol. 339, # 6 p. 564 - 574

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Citation Number: 5

Abstract

The tandem Diels-Alder/dehydrochlorination reaction of semisquaric chloride (1) with the 1, 2-bis (methylene) cycloalkanes 2a-c and 1, 2-bis (methylene)-4-cyclohexene (9) affords the linearly-fused cycloalkanodihydrobenzocyclobutene-1, 2-diones 3a-c and 3, 4, 7, 8-