American Chemical Society
jo7b03147_si_006.cif (21.19 kB)

Stereoselective Photodimerization of 3‑Arylindenones in Solution and in the Solid State

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posted on 2018-01-17, 00:00 authored by Naohiro Uemura, Hiroki Ishikawa, Naoki Tamura, Yasushi Yoshida, Takashi Mino, Yoshio Kasashima, Masami Sakamoto
Photodimerization of 3-arylindenones in solution and in the solid state was examined. Irradiation of 3-arylindenones in benzene exclusively gave C2-symmetric anti-HH cyclobutane dimers in good yields. In contrast, photolysis in the solid state afforded syn-HH cyclobutane dimers efficiently, which was considerably influenced by the molecular arrangement in the crystal lattice.