The aza Diels-Alder reaction is described for a novel diene. Imines bearing benzyl and aromatic protecting groups both work well. Moderate diastereoselectivities can be obtained using the simple alpha-methylbenzyl chiral auxiliary. (c) 2005 Elsevier Ltd. All rights reserved.
Asymmetric aza-Diels-Alder reaction: enantio- and diastereoselective reaction of imine mediated by Chiral Lewis acid
作者:Kouji Hattori、Hisashi Yamamoto
DOI:10.1016/s0040-4020(01)80532-9
日期:1993.2
asymmetric aza-Diels-Alder reaction usingchiral boron mediator is developed. The key to its success is the use of the chiral boron complex prepared in situ from (R)- or (S)- binaphthol and B(OPh)3. The enantiomeric reaction of prochiral imine affords products of up to 90% ee. The double asymmetric induction of chiral imine using α-benzylamine as a chiralauxiliary is achieved with almost complete diastereoselectivity
作者:Cody Timmons、Adiseshu Kattuboina、Lauren McPherson、James Mills、Guigen Li
DOI:10.1016/j.tet.2005.10.018
日期:2005.12
The aza Diels-Alder reaction is described for a novel diene. Imines bearing benzyl and aromatic protecting groups both work well. Moderate diastereoselectivities can be obtained using the simple alpha-methylbenzyl chiral auxiliary. (c) 2005 Elsevier Ltd. All rights reserved.