been developed. The reaction was efficiently promoted by KOtBu/DMF without any transition-metal catalyst. A variety of indene derivatives were prepared in moderate to good yields. A cascade cyclization of 2-alkyl-substituted substrates at elevated reaction temperature gave bicyclic indene derivatives. The reaction is proposed to proceed through the generation of a triphenylmethyl radical.
已经开发了一种将三芳基
甲烷分子内加成到
炔烃的方法。在没有任何过渡
金属催化剂的情况下,KOtBu/
DMF 有效地促进了反应。以中等至良好的产率制备了多种
茚衍
生物。在升高的反应温度下,2-烷基取代底物的级联环化得到双环
茚衍
生物。建议该反应通过生成三苯
甲基自由基进行。