取代苄基五甲氧羰基环戊二烯的合成和晶体结构  

Synthesis and Crystallographic Structure of Substituted Benzyl Pentame thoxycarbonyl Cyclopentadienes

作　　者：丘昌隆[1] 祝英[2] 苗果斌 桑冬梅 

机构地区：[1]兰州大学化学系,兰州730000 [2]兰州大学分析测试中心,兰州730000

出　　处：《化学学报》1992年第5期434-438,共5页Acta Chimica Sinica

摘　　要：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(6)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_0=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°。Seven new pmcp R compounds have been synthesized from the reaction of potassium pentamethoxycarbonyl cyclopentadienide with substituted benzyl halides. All of these products have the carbon-carbon linkage to the cyclopentadiene ring from the proton NMR, IR and elementary analysis assignment. An X-ray diffraction investigation of one of the products, 1-naphthyl methyl pentamethoxycarbonyl cyclopentadiene, has unequivocally established its structure. The compound is monoclinic. The space group is.P2_1/n. a=0.9731(1), b=1.7403 (3), c=1.465 (3) nm, β=95.70 (1)°, V=2.4712 nm^3, D_c=1.334 g/cm^3, final R=0.093. The plane angle between naphthalene ring and cyclopentadiene ring is 68.19°.

关 键 词：五甲氧羰基 环戊二烯 合成 结构 

分 类 号：O624.12[理学—有机化学]