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Allenyl(vinyl)methane photochemistry. Photochemistry of 4,4,7-trimethyl-5-phenyl-2,5,6-octatrienate derivatives

✍ Scribed by Takashi Tsuno; Hidetaka Hoshino; Kunio Sugiyama

Publisher: Elsevier Science
Year: 1997
Tongue: French
Weight: 261 KB
Volume: 38
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(97)00117-2

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✦ Synopsis

The direct photolysis of the diester in the title compounds gave a cross conjugated triene, [2+2] cycloadduct, pyran, and cyclopropene. The direct photolysis of the monoester afforded a cross conjugated triene, [2+21 cycloadduct, cyclopropene, and its Z-form. The sensitized photolysis of these esters afforded the trienes and [2+2] cycloadducts, which were derived from the triplet excited state of the different chromophores.

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