Dianhydrides of 1(4)-substituted 7,8-diphenylbicyclo[2.2.2]oct-7-ene-2,3,5,6-tetracarboxylic acids
作者:Irina V. Mikhura、Andrey A. Formanovsky、Elena V. Nozhevnikova、Igor A. Prokhorenko、Vladimir A. Korshun
DOI:10.1016/j.mencom.2017.09.004
日期:2017.9
2(5)-Substituted 4-hydroxy-3,4-diphenylcyclopent-2-en-1-ones easily react with 2.5 molar excess of maleic anhydride to give 1(4)-substituted 7,8-diphenylbicyclo[2.2.2]oct-7-ene-2,3,5,6-tetracarboxylic acid dianhydrides containing alkyl groups at bridgehead of the bicycle. The stereochemistry of the obtained bicyclic bis-anhydrides was determined to be syn-syn .
2(5)-取代的4-羟基-3,4-二苯基环戊-2-烯-1-酮容易与2.5摩尔过量的马来酸酐反应,得到1(4)-取代的7,8-二苯基双环[2.2.2]在自行车桥头处含有烷基的oct-7-ene-2,3,5,6-四羧酸二酐。确定所获得的双环双酸酐的立体化学为顺式-顺式。