23417-85-8Relevant articles and documents
Asymmetric Induction in Hydroacylation by Cooperative Iminium Ion-Transition-Metal Catalysis
Rastelli, Ettore J.,Truong, Ngoc T.,Coltart, Don M.
supporting information, p. 5588 - 5591 (2016/11/17)
A new strategy for the rhodium-catalyzed enantioselective hydroacylation is described. This has been achieved through the merger of iminium ion catalysis and transition-metal catalysis such that asymmetric induction derives from a readily accessible, inexpensive chiral nonracemic secondary amine catalyst rather than a chiral nonracemic phosphine as is typical of conventional asymmetric hydroacylation methods.
Substituent Effect Behavior in the Antiaromatic Inden-1-yl Cation System
Friedrich, Edwin C.,Tam, Teresa M.
, p. 315 - 319 (2007/10/02)
Studies of the rate-accelerating effects in solvolysis produced by 5-methyl and 5-methoxy substituents on the benzene ring and a 3-methyl substituent on the double bond of the inden-1-yl 3,5-dinitrobenzolate system have been carried out.In both 80percent aqueous acetone and in 2,2,2-trifluoroethanol, the rate accelerations observed in the inden-1-yl system were approximately the same as those found in model cyclopenten-3-yl and indan-1-yl systems.From these results, it is concluded that delocalization of charge into both the benzene ring and double bond of the 8?-electron inden-1-yl carbocation is taking place and is apparently undiminished by antiaromatic effects.
