Mechanism of reduction of 1, 1-diphenyl-2, 2-dinitroethylene by 1-benzyl-1, 4-dihydronicotinamide: transition state with partial diradical and partial covalent bonding …
YC Liu, HY Wang, QC Yang, TCW Mak
文献索引:Liu, You-Cheng; Wang, Hong-Yi; Yang, Qing-Chuan; Mak, Thomas C.W. Journal of the Chemical Society. Perkin Transactions 2, 2000 , # 4 p. 649 - 653
The mechanism of reduction of 1,1-diphenyl-2,2-dinitroethylene (DPDN) by 1-benzyl-1,4-dihydronicotinamide (BNAH) in acetonitrile has been investigated. Based on product analysis, isotopic tracing and electrochemical analysis, the reaction takes place by a hydride transfer mechanism giving 1,1-diphenyl-2,2-dinitroethane (DPDNH). Single crystal X-ray analysis shows that DPDN conforms to idealized C 2 symmetry, but steric repulsions between the bulky substituents result in ...