Enantioselective Photocyclization of N-Alkylfuran-2-carboxyanilides to trans-Dihydrofuran Derivatives in Inclusion Crystals with Optically Active Host Compounds Derived from Tartaric Acid.
The steric course of the photocyclization reaction of the title achiral compounds (1) to optically active trans-dihydrofuran derivatives (2) was controlled by carrying out the reaction in inclusion crystals (4) with optically active hosts (3) derived from tartaric acid. The mechanism of the enantioselective reaction of 1 in 4 was studied by X-ray structural analysis of 4. In some cases, the steric course of the photoreaction was different depending on whether 4 was prepared by recrystallization or by mixing of 1 and 3.
Toda
Fumio
F
Department of Applied Chemistry, Faculty of Engineering, Ehime University, Matsuyama, Ehime 790-8577, Department of Materials Sciences and Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, and Department of Materials Science, Hokkaido University of Education at Hakodate, Hakodate, Hokkaido 040-8567, Japan.
Miyamoto
Hisakazu
H
Kanemoto
Kazuyuki
K
Tanaka
Kiyoaki
K
Takahashi
Yukiko
Y
Takenaka
Yasuyuki
Y