Syntheses of Decadiendiyndials and Tetradecatetraendiyndials and Intramolecular Cyclization of Former Dialdehydes
作者:Ryonosuke Muneyuki、Mamoru Morimoto、Motomu Tanaka、Tsutomu Katakami、Takayoshi Kashitani、Masahiko Iyoda、Masazumi Nakagawa
DOI:10.1246/bcsj.46.2565
日期:1973.8
cyclization. Thermal reaction of dialdehyde (I, II, and III) afforded difuranylacetylene derivatives (IX, XXI and XXII). 5-Phenyl-2,4-heptadien-6-ynal (XXXII) was prepared from 3-phenyl-2-penten-4-ynal (VIII) or its acetal (XI) by a modified Wittig reaction or by the condensation of ethyl vinyl ether. Oxidative Coupling of XXXII or 5-t-butyl-2,4-heptadien-6-ynal afforded 5,10-diphenyl-(XXIX) or 5,10-di-t-butyl-2
取代的 2,8-decadien-4,6-diyndials(I、II 和 III)通过相应取代的戊烯醛(VII 和 XIII)或缩醛(XI)的氧化偶联合成。发现通过加入甲醇然后分子内环化,癸二烯二醛(I、II和III)容易得到二氢呋喃基衍生物(X、XIV和XXV)。二醛(I、II 和 III)的热反应得到二呋喃基乙炔衍生物(IX、XXI 和 XXII)。5-Phenyl-2,4-heptadien-6-ynal (XXXII) 由 3-phenyl-2-penten-4-ynal (VIII) 或其缩醛 (XI) 通过改进的 Wittig 反应或通过乙基缩合反应制备乙烯基醚。XXXII 或 5-t-丁基-2,4-庚二烯-6-ynal 的氧化偶联得到 5,10-二苯基-(XXIX) 或 5,10-二-叔丁基-2,4,10,12-十四碳四烯-6,8-diyndial (XXX) 没有表现出分子内环化的趋势。