Conformational Analysis of Endoperoxides Grafted onto Bicyclo[2.2.n]alkanes as a Test of the Rigidity of the Bicyclic Skeleton. Photo-oxidation of [2.2.2] Hericene and 2,3,5,6-Tetramethylidenebicyclo[2.2.n]alkanes
作者:Jean-Luc Birbaum、Pierre Vogel
DOI:10.1002/hlca.19860690403
日期:1986.6.18
The photo-oxidation of [2.2.2]hericene (6) gave successively the endoperoxides 11 (9,10,11,12-tetramethylidene-4,5-dioxatricyclo[6.2.2.02,7]dodec-2(7)-ene), the bis-endoperoxide 16 (15,16-dimethylidene-4,5,11,12-tetraoxatetracyclo[6.6.2.02,7.o9,14]hexadeca-2(7),9(14)-diene), and the tris-endoperoxide 19 (4,5,11,12,17,18-hexaoxapentacyclo[6.6.6.02,7.09,14.015,20]icosa-2(7),9(14),15(20)-triene). The
[2.2.2] ic烯(6)的光氧化依次得到内过氧化物11(9,10,11,12-四亚甲基-4,5-二氧杂三环[6.2.2.0 2,7 ] dodec -2(7)-烯),双内过氧化物16(15,16-二甲叉-4,5,11,12-四氧杂酸酯环[6.6.2.0 2,7 .o 9,14 ] hexadeca-2(7),9(14)-二烯)和tris- endoperoxide 19(4,5,11,12,17,18-hexaoxapentacyclo [6.6.6.0 2,7 .0 9,14 .0 15,20 ] icosa -2(7),9(14 ),15(20)-三烯)。的内过氧化物11,16,和19在存在或不存在染料敏化剂的情况下,形成了C。2,3,5,6-四亚甲基双环[2.2.2]辛烷(4),5,6,7,8-四亚甲基双环[2.2.2]辛-2-烯(5),2的敏化光氧化3,5,6-四亚甲基双环[2