Cross double Mannich reaction catalyzed by I2: Synthesis of highly substituted 4-piperidones
摘要:
Cross double Mannich reaction and tandem cyclization were achieved under iodine catalyzed conditions, yielding a series of highly substituted 4-piperidones. Among the possible diastereomers, only one diastereomer was isolated, which could be ascribed to the chair-like transition state in six-membered ring, in which all of the hindered groups are located in the pseudoequatorial orientation. (C) 2011 Xiao Dong Jia. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
Third-order Nonlinear Optical Properties and Crystal Structures of N-(2-Nitrobenzalidene)-2,4-dimethylaniline and N-(3-Nitrobenzalidene)- 2,4-dimethylaniline