Auxiliary accelerated reactions: Towards the use of catalytic chiral auxiliaries
摘要:
In competition experiments, the acceleration of reactivity of alkenes tethered to pyridyl groups compared with the corresponding alkenes tethered to phenyl groups in the presence of transition metals was demonstrated for two reaction types: Diels-Alder cycloaddition of enoate esters and catalytic hydrogenation of allylic and homoallylic ethers. The rate accelerations observed are of crucial importance in the development of a new concept for asymmetric catalysis: chiral auxiliaries which can function in a catalytic manner. (C) 1997 Elsevier Science Ltd.
Wieditz, Stefan; Schaefer, Hans J., Acta chemica Scandinavica. Series B: Organic chemistry and biochemistry, 1983, vol. 37, # 6, p. 475 - 484
作者:Wieditz, Stefan、Schaefer, Hans J.
DOI:——
日期:——
Raja, S.; Xavier, N.; Arulraj, S. J., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1988, vol. 27, # 1-12, p. 916 - 919
作者:Raja, S.、Xavier, N.、Arulraj, S. J.
DOI:——
日期:——
Auxiliary accelerated reactions: Towards the use of catalytic chiral auxiliaries
作者:Andrew D. Westwell、Jonathan M.J. Williams
DOI:10.1016/s0040-4020(97)00829-6
日期:1997.9
In competition experiments, the acceleration of reactivity of alkenes tethered to pyridyl groups compared with the corresponding alkenes tethered to phenyl groups in the presence of transition metals was demonstrated for two reaction types: Diels-Alder cycloaddition of enoate esters and catalytic hydrogenation of allylic and homoallylic ethers. The rate accelerations observed are of crucial importance in the development of a new concept for asymmetric catalysis: chiral auxiliaries which can function in a catalytic manner. (C) 1997 Elsevier Science Ltd.