A planar and stable derivative of 13,14-didehydrotribenzo[a,c,e]cyclooctene: synthesis and x-ray crystal structure of 5,6-didehydro-1,1,14,14-tetramethyl-10,11-methano-1H-benzo[5,6]cycloocta[1,2,3,4-def]fluorene
作者:Xiaomin Wang、Ruji Wang、Thomas C. W. Mak、Henry N. C. Wong
DOI:10.1021/ja00177a046
日期:1990.10
The crystal structure consists of a packing of discrete molecules with normal van der Waals contacts, and the three independent molecules are almost perpendicular to each other (Figure 2); values of the dihedral angle between pairs of least-squares molecular planes are as follows: I-II 93.0 (9) o , II-III 77.8 (9) o , and I-III 81.4 (9) o . In conclusion, we have synthesized a stable planar derivative
晶体结构由具有正常范德华接触的离散分子堆积组成,三个独立的分子几乎相互垂直(图 2);最小二乘分子平面对之间的二面角值如下:I-II 93.0 (9) o 、II-III 77.8 (9) o 和I-III 81.4 (9) o 。总之,我们合成了 13,14-二脱氢三苯并 [a,c,e] 环辛烯 (1) 的稳定平面衍生物,这是苯环化的环辛三烯家族中唯一难以捉摸的成员
WANG, XIAO-MIN;WANG, RU-JI;MAK, THOMAS C. W.;WONG, HENRY N. C., J. AMER. CHEM. SOC., 112,(1990) N1, C. 7790-7791
作者:WANG, XIAO-MIN、WANG, RU-JI、MAK, THOMAS C. W.、WONG, HENRY N. C.
DOI:——
日期:——
Arene synthesis by extrusion reaction. 16. Coplanar and stable derivatives of 13,14-didehydro-tribenzo[a,c,e]cyclooctene: synthesis of 5,6-didehydro-1,1,14,14-tetramethyl-10,11-methano-1H-benzo[5,6]cycloocta[1,2,3,4-def]fluorene and 5,6-didehydro-10,11-methano-1H-benzo[5,6]cycloocta[1,2,3,4-def]fluorene-1,14-dione and x-ray crystal structures of 1,1,14,14-tetramethyl-10,11-methano-1H-benzo[5,6-cycloocta[1,2,3,4-def]fluorene and 1,12-dihydro-1,1,12,12-tetramethyldicyclopenta[def,jkl]tetraphenylene
作者:Xiao Min Wang、Xuelong Hou、Zhongyuan Zhou、Thomas C. W. Mak、Henry N. C. Wong
DOI:10.1021/jo00078a031
日期:1993.12
5,6-Didehydro-1,1,14,14-tetramethyl-10,11-methano-1H-benzo[5,6]cycloocta[1,2,3,4-def]fluorene (2) and 5,6-didehydro-10,11-methano-1H-benzo[5,6]cycloocta[1,2,3,4-def]fluorene-1,14-dione (3) have been synthesized. Structural investigation of these molecules revealed that they all possess a coplanar structure.