Cycloproparenes: synthesis, structure, and spectral properties of alkylidenecycloproparenes
作者:Brian. Halton、Clifford J. Randall、Graeme J. Gainsford、Peter J. Stang
DOI:10.1021/ja00279a046
日期:1986.9
(2)O, V = 1428.0 A', 1200 reflections ( I / u ( I ) 3 3.0), and R = 0.0491. The spectral data of the alkylidene compounds are discussed in terms of a contribution to their structures from the dipolar form 5b. Strained organic molecules have continued to fascinate chemists for nearly a century. Because of their high energy and associated strain, such molecules possess unusual physical, spectral, and
1H-环丙[b]萘(12)和1H-环丙苯(2)通过环丙芳基阴离子生成和随后的Peterson烯化首次分别转化为1-亚烷基、H-环丙芳烃17-22和27-30。迄今为止,反应序列未能提供母体烃 5 和 6。(二苯基亚甲基)环丙苯 27 的结构已通过 X 射线晶体学方法确定 [C20H,4 的晶体数据:空间群 P 2 , / n , a = 17.579 (5) A, b = 7.909 (3) A, c = 10.298 (4) A, p = 94.06 (2)O, V = 1428.0 A', 1200 次反射 ( I / u ( I ) 3 3.0), 和 R = 0.0491。亚烷基化合物的光谱数据是根据偶极形式 5b 对其结构的贡献来讨论的。近一个世纪以来,紧张的有机分子一直让化学家着迷。由于它们的高能量和相关的应变,这些分子具有不寻常的物理、光谱和化学性质,这些性质具有理论和合成意义,并且具有巨大的吸引力。~