25,27-dithiasapphyrin and pyrrole-inverted isomer of 21,23-dithiaporphyrinfrom condensation of pyrrole and 2,5-bis(p-tolylhydroxymethyl)thiophene

Authors
Sprutta, N Latos-Grazynski, L
Citation
N. Sprutta et L. Latos-grazynski, 25,27-dithiasapphyrin and pyrrole-inverted isomer of 21,23-dithiaporphyrinfrom condensation of pyrrole and 2,5-bis(p-tolylhydroxymethyl)thiophene, ORG LETT, 3(12), 2001, pp. 1933-1936
Citations number
36
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
ORGANIC LETTERS
ISSN journal
15237060 → ACNP
Volume
3
Issue
12
Year of publication
2001
Pages
1933 - 1936
Database
ISI
SICI code
1523-7060(20010614)3:12<1933:2APIO2>2.0.ZU;2-P
Abstract
[GRAPHICS] A novel aromatic isomer of 5,10,15,20-tetra(p-tolyl)-21,23-dithiaporphyrin (S2TTP) with an inverted pyrrole ring, 5,10,15,20-tetra(p-tolyl)-2-aza-21-c arba-22,24-dithiaporphyrin (S2CTTP), and 5,10,15,20-tetra(p-tolyl)-25,27-di thiasapphyrin (25,27-S2TTSH), have been obtained by a condensation of 2,5-b is((p-tolyl)hydroxymethyl)thiophene and pyrrole, A conformational equilibri um, unique in a sapphyrin class, between two S(27)-thiophene-flipped and pl anar structures of neutral 25,27-S2TTSH was detected by H-1 NMR.