Diastereoselective cyclization of a dithienylethene switch through single crystal confinement.
Upon UV irradiation of the hydrogen-bond confined crystal state of a dithienylhexafluorocyclopentene with (R)-N-phenylethylamide substituents, the photochemical cyclization reaction proceeds diastereoselectively to form the coloured, closed-ring isomer with 97% de.
Uchida
Kingo
K
Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku University, CREST-JST, Seta, Otsu, 520-2194, Japan. uchida@chem.ryukoku.ac.jp
Walko
Martin
M
de Jong
Jaap J D
JJ
Sukata
Shin-ichiro
S
Kobatake
Seiya
S
Meetsma
Auke
A
van Esch
Jan
J
Feringa
Ben L
BL