Carbene-Catalyzed α-Carbon Amination of Chloroaldehydes for Enantioselective Access to Dihydroquinoxaline Derivatives
摘要:
An NHC-catalyzed alpha-carbon amination of chloroaldehydes was developed. Cyclohexadiene-1,2-diimines are used as amination reagents and four-atom synthons. Our reaction affords optically enriched dihydroquinoxalines that are core structures in natural products and synthetic bioactive molecules.
Carbene-Catalyzed α-Carbon Amination of Chloroaldehydes for Enantioselective Access to Dihydroquinoxaline Derivatives
摘要:
An NHC-catalyzed alpha-carbon amination of chloroaldehydes was developed. Cyclohexadiene-1,2-diimines are used as amination reagents and four-atom synthons. Our reaction affords optically enriched dihydroquinoxalines that are core structures in natural products and synthetic bioactive molecules.
Lewis Acid Catalyzed Addition of Allylsilane to<i>o</i>-Quinonediimides: Formal Diels-Alder Reaction versus Allylation
作者:Vijay Nair、R. Dhanya、N. Vidya、S. Devipriya
DOI:10.1055/s-2005-918494
日期:——
Lewis acid promoted addition of allylsilane to o-quinonediimines afforded tetrahydroquinoxaline derivatives or allylated amides, depending on the nature of the substituent on the imine nitrogen.
Lewis Acid-Promoted Annulation of <i>o</i>-Quinonediimines by Allylstannane: A Facile Synthesis of Quinoxaline Derivatives
作者:Vijay Nair、R. Dhanya、C. Rajesh、Mohan M. Bhadbhade、K. Manoj
DOI:10.1021/ol048004m
日期:2004.12.1
Lewis acid-promoted addition of allyltri-n-butylstannane to o-quinonediimines afforded tetrahydroquinoxaline derivatives or allylated amides depending on the nature of the substituent on imine nitrogen.
Carbene-Catalyzed α-Carbon Amination of Chloroaldehydes for Enantioselective Access to Dihydroquinoxaline Derivatives
作者:Ruoyan Huang、Xingkuan Chen、Chengli Mou、Guoyong Luo、Yongjia Li、Xiangyang Li、Wei Xue、Zhichao Jin、Yonggui Robin Chi
DOI:10.1021/acs.orglett.9b01520
日期:2019.6.7
An NHC-catalyzed alpha-carbon amination of chloroaldehydes was developed. Cyclohexadiene-1,2-diimines are used as amination reagents and four-atom synthons. Our reaction affords optically enriched dihydroquinoxalines that are core structures in natural products and synthetic bioactive molecules.