Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, China.
Angew Chem Int Ed Engl. 2013 Jan 7;52(2):585-8. doi: 10.1002/anie.201207405. Epub 2012 Nov 13.
Cinchona alkaloids were used as Lewis base catalysts in the title reaction. The [4+2] cyclization of α,β-unsaturated acyl chlorides with electron-deficient alkenes derived from oxindole gave the corresponding spirocarbocyclic oxindoles.
金鸡纳生物碱被用作标题反应中的路易斯碱催化剂。α,β-不饱和酰氯与来源于吲哚酮的缺电子烯烃的[4+2]环化反应得到了相应的螺环碳环吲哚酮。