Postprint version. Published in Tetrahedron Letters, Volume 31, Issue 26, January 1, 1990, pages 3719-3722.
NOTE: At the time of publication, the author M. Dolores Berber-Jimenez was not yet affiliated with Cal Poly.
The definitive version is available at https://doi.org/10.1016/S0040-4039(00)97453-7.
As the size of the cycloalkenyl ring in synthetic C5-C7 tetracycloalkenyl-meso-tetraphenylporphyrins (TCnTPP) is increased the porphyrin core changes from planar to non-planar, showing that porphyrins with well-defined degrees of ruffling can be synthesized for use in systematic studies to determine the effects of non-planarity.