Tetrahedron letters

Syntheses of methylene-bridged benzopyrenes, carcinogenic components of automobile exhaust residue

RJ Young, RG Harvey

Index: Young, Robert J.; Harvey, Ronald G. Tetrahedron Letters, 1989 , vol. 30, # 48 p. 6603 - 6606

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Citation Number: 10

Abstract

Abstract Syntheses of the methylene-bridged derivatives of benzo [a] pyrene and benzo [e] pyrene (1 and 2) are described. The latter was obtained by a route involving in the key step tandem cyclization of a diacid derivative of pyrene. Although analogous preparation of 1 failed, it was obtained successfully by a synthetic route based on cyclopenta [def] phenanthrene.