化学学报 ›› 1992, Vol. 50 ›› Issue (5): 434-438. 上一篇    下一篇

研究论文

取代苄基五甲氧羰基环戊二烯的合成和晶体结构

丘昌隆;祝英;苗果斌;桑冬梅   

  1. 兰州大学化学系;兰州大学分析测试中心
  • 发布日期:1992-05-15

Synthesis and crystallographic structure of substituted benzyl pentamethoxycarbonyl cyclopentadienes

QIU CHANGLONG;ZHU YING;MIAO GUOBIN;SANG DONGMEI   

  • Published:1992-05-15

五甲氧羰基环戊二烯基钾和取代苄基卤化物反应, 合成了七个新型苄基取代五甲氧羰基环戊二烯。由^1H NMR、IR、元素分析等确认R(苄基)和环戊二烯上碳直接相连, 具有典型的碳碳连结。对产物之一, 1-萘亚甲基五甲氧羰基环戊二烯的X射线衍射测定, 进一步肯定了上述结论。化合物为单斜晶系, 空间群为P2/n, a=0.9731(1), b=1.7403(3), c=1.465(3)nm; β=95.70(1)^°, v=2.4712nm^3, D~c=1.334g/cm^3, 最终的R=0.093, 萘亚甲基环与环戊二烯基环的二面角为68.19^°。

关键词: 晶体结构测定, 萘 P, 环戊二烯 P, 苄基

Seven title compounds have been synthesized from the reaction of potassium pentamethoxycarbonylcyclopentadienide with substituted benzyl halides. All of these products have the carbon-carbon linkage to the cyclopentadiene ring. An x-ray diffraction investigation of 1-naphthylmethylpentamethoxycarbonylcyclopentadiene has unequivocally established its structure. The plane angle between the naphthalene ring and the cyclopentadiene ring is 68.19?

Key words: CRYSTAL STRUCTURE DETERMINATION, NAPHTHALENE P, CYCLOPENTADIENE P, BENZYL GROUP

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