Highly diastereoselective photochromic cyclization of a bisthienylfulgide

Authors
Yokoyama, Y Sagisaka, T Yamaguchi, Y Yokoyama, Y Kiji, J Okano, T Takemoto, A Mio, S
Citation
Y. Yokoyama et al., Highly diastereoselective photochromic cyclization of a bisthienylfulgide, CHEM LETT, (3), 2000, pp. 220-221
Citations number
12
Categorie Soggetti
Chemistry
Journal title
CHEMISTRY LETTERS
ISSN journal
03667022 → ACNP
Issue
3
Year of publication
2000
Pages
220 - 221
Database
ISI
SICI code
0366-7022(20000305):3<220:HDPCOA>2.0.ZU;2-H
Abstract
A fulgide, 3,4-bis[1-(2,5-dimethyl-3-thienyl)ethylidene]- 3,4-dihydro-2,5-f urandione, was synthesized by Pd-catalyzed carbonylation of the correspondi ng 2-butyne-1,4-diol derivative. UV-irradiation to the ZZ-form in toluene r esulted in the formation of two diastereomeric colored forms by way of EE-a nd EZ-forms. The colored form from the EE-form was predominant in 90% de.