o-Quinonoid compounds. Part IV. 1,3-Diphenylinden-2-one
作者:J. M. Holland、D. W. Jones
DOI:10.1039/j39710000608
日期:——
1,3-Diphenylinden-2-one is generated by dehydration of 1-hydroxy-1,3-diphenylindan-2-one with acetic an-hydride, and by reduction of 1,3-dibromo-1,3-diphenylindan-2-one with sodium iodide. It is a reactive intermediate readily intercepted in Diels–Alder reactions with dienophiles and dienes. It dimerises below 20° by apparent [π4 +π4] addition but does not react with dienes in this way. Thermal dissociation