Oxidative free-radical cyclizations of acetoacetates 1, 8, 17, and 20 with Mn(OAc)3·2H2 and Cu(OAc)2·H2O in acetic acid provide cycloheptenes and cyclooctenes in moderate to good yield. Tandem cyclizations of 28, 35 and 51 provide bicyclo[4.2.1]nonanes, bicyclo[5.2.1]decanes, bicyclo[5.3.0]decanes and bicyclo[6.3.0]undecanes.
乙酰乙酸酯的氧化自由基环化1,8,17,和20与
锰(OAC)3 ·2H 2和Cu(OAc)2 ·H 2 ö在
乙酸提供cycloheptenes和环
辛烯在中度至良好的产率。的串联环化28,35和51提供
双环[4.2.1]壬烷,双环[5.2.1]
癸烷,二环[5.3.0]
癸烷和双环[6.3.0]
十一烷。