Charge acceleration

Nubbemeyer U (2001) Synthesis of Medium-Sized Ring Lactams. 216 125-196 Nubbemeyer U (2005) Recent Advances in Charge-Accelerated Aza-Claisen Rearrangements. 244 149-213... [Pg.264]

Eq. 12) position of the cyclopropyl ring dramatically lowers the activation energy of this process 12). In addition charge accelerated vinylcyclopropane rearrangements... [Pg.12]

E. J. Corey, F.-Y. Zhang, Mechanism and Conditions for Highly Enantioselective Epoxidation of a,p-Enones Using Charge-Accelerated Catalysis by a Rigid Quaternary Ammonium Salt , Org. Lett. 1999,1,1287-1290. [Pg.142]

Recent Advances in Charge-Accelerated Aza-Claisen Rearrangements... [Pg.149]

Keywords Aza-Claisen rearrangement 3-Aza-Cope rearrangement Chirality transfer Asymmetric induction Charge acceleration... [Pg.150]

Simple aromatic aza-Claisen rearrangement without charge acceleration by addition of an acid required other activating factors to enable the reaction to be run at acceptable temperatures. The reduction of ring strain was found to serve as a useful promoter to induce aromatic aza-Claisen rearrangement [21]. [Pg.165]

ION BEAM Particles cm eV cm Ion mass and charge Accelerating voltage Beam size Beam shape Flash (dwell) time... [Pg.167]

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