Studies in the Cycloproparene Series: Cross-Conjugatedπ-Extended Alkylidenecycloproparenes
作者:Gareth M. Dixon、Brian Halton
DOI:10.1002/ejoc.200400353
日期:2004.9
The first simple and stable cross-conjugated π-extended alkylidenecycloproparenes 5, 6 and 15−22 have been prepared as coloured crystalline derivatives from use of (E,E)-1,5-diphenylpenta-2,4-dienone, (E,E)-1,5-diarylpenta-1,4-dien-3-ones and (E,E)-2,5-(diarylmethylidene)cyclopentanones with the relevant 1,1-bis(trimethylsilyl)cyclopropa[b]naphthalene. The permanent dipole moments of the compounds
使用 (E,E)-1,5-diphenylpenta-2,4-dienone, (E, E)-1,5-二芳基戊-1,4-二烯-3-酮和(E,E)-2,5-(二芳基亚甲基)环戊酮与相关的1,1-双(三甲基甲硅烷基)环丙[b]萘。测量了化合物的永久偶极矩,并评估了旋转异构体的构象偏好。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)