Novel rearrangement of twisted 2,4-di-alkyl 2-trans-4-trans pentadienals: An approach to cyclopentenones based on molecular mechanical consideration期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Novel rearrangement of twisted 2,4-di-alkyl 2-trans-4-trans pentadienals: An approach to cyclopentenones based on molecular mechanical consideration

Authors:	Haru Ogawa Yoshinari Taketugu Taiji Imoto Yōichi Taniguchi Hidefumi Kato

Affiliation:	Faculty of Pharmaceutical Sciences, Kyushu University, Maedashi, Fukuoka, 812, Japan;Department of General Chemistry, Kurume Technical College, Komorino, Kurume Japan

Abstract:	Rearrangement of 2,4-di- $trans$ -pentadienals $IVa-d$ was described as a consequence of the successive alkyl substitutions on the C-2 and C-4 positions. ¹H-FT nmr spectroscopy suggested that the reaction involves ketene $VIII$ as an intermediate.

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