The Non-planarity of the Bicyclo[2.2.1]hept-2-ene Double bond. Crystal Structures of Bicyclo[2.2.2]oct-2-ene, Bicyclo[2.2.1]hept-2-ene, and Bicyclo[2.1.1]hex-2-ene Systems
作者:A. Alan Pinkerton、Dieter Schwarzenbach、Jean-Luc Birbaum、Pierre-Alain Carrupt、Luis Schwager、Pierre Vogel
DOI:10.1002/hlca.19840670428
日期:1984.6.20
(16) were established by X-ray diffraction. The alkyl substituents onto the endocyclic bicyclo[2.2.1]hept-2-ene double bond deviate from the C(1), C(2), C(3), C(4), plane by 13.5°4 in 3 and by 13.9° in 6, leaning toward the endo-face. No such out-of-plane deformations were observed with the bicyclo[2.2.2]oct-2-ene derivatives 9 and 12. The exocyclic s-cis-butadiene moieties in 3, 6 and 9 do not deviate
(1 R,4 R,5 S,8 S)-9,10-二甲基同环[6.2.1.0 2,7 ] undec2(7)-烯-4,5-二羧酸酐(3)的晶体结构,(1 R,4 R,5 S,8 S)11-异亚丙基-9,10-二甲基亚杂环[6.2.1.m 2,7 ] undec -2(7)-ene-4,5-二羧酸酐(6),( 1 R,4 R,5 S 8 S)-9,10-二甲基亚杂环[6.2.2.0 2,7 ] dodec-2(7)-烯-4,5-二羧酸酐(9),(1 R 4R 5 S 8 S)-三环[6.2.2.0 2,7 ] dodeca-2(7),9-二烯-4,5-二羧酸酐(12)和(4 R,5 S)-三环[6.1.1.0通过X射线衍射确定2.7 ] dec-2(7)-烯-4,5-二羧酸(16)。从C(1),C(2),C(3),C(4),平面中的烷基取代基到内环双环[2.2.1]庚-2-烯双键偏离13.5°4在3和倾斜6到13