Online article for Non-subscribers

Pay per view

Heterocycles has a pay-per-view service for Non-subscribers.
You will be able to directly purchase the full text article through PayPal.
Your purchased Paper can be downloaded after the payment is completed.
An e-mail will be sent the URL to download the paper.
If you have any questions, please contact:

Price: ¥ 4,400 (Yen only)
Period: This Article can be accessed for 7 days.

Communication | Special issue | Vol 40, No. 1, 1995, pp.131-135
Published online, 1st January, 1970
DOI: 10.3987/COM-94-S32
Syntheses of Regiospecifically Meso Functionalized Dipyrromethanes, Porphyrins, and Diphenylethane-linked Bisporphyrins

David A. Lee, Jean M. Brisson, and Kevin M. Smith*

*Department of Chemistry, University of California, One Shields Ave., Davis, CA 95616, U.S.A.


Acid catalyzed condensation of 2-unsubstituted pyrroles with diethyl acetals permits preparation, in good yields, of a variety of meso-functionalized dipyrromethanes. Subsequent use in the so-called MacDonald “2+2” condensation provides 5-functionalized porphyrins and, eventually, benzochlorin derivatives. A novel application of a reductive coupling scheme, utilizing Ni(0), provides diphenylethane-linked bisporphyrins, which are potential models for electron transfer studies.