Concise and efficient three-component domino [4+ 1 + 1] carbocyclization to highly substituted fluoren-9-one derivatives promoted by K2CO3 has been developed under microwave irradiation conditions. The direct bis-cy...
Acknowledgement This work was partly supported by the National Natural Science Foundation of China (Nos. 20972095, 21172143, 21232004), Nippon Chemical Industrial Co., Ltd., the Nature Science Foundation of Ningbo (No. 2012A610086) and Shanghai Jiao Tong University. We thank Prof. Tsuneo Imamoto and Dr. Masashi Sugiya for helpful discussions and the Instrumental Analysis Center of Shanghai Jiao Tong University for HRMS determination.
A Pd(II)-catalyzed oxidative cyclization of olefinic tosylamides was developed for the preparation of aryl-fused and N-containing six-membered heterocycles. Under optimized conditions the reaction proceeded with hig...