Photoinduced transformation of α,β-epoxyketones to β-hydroxyketones by Hantzsch 1,4-dihydropyridine
摘要:
Irradiation (lambda >300 nm) of Hantzsch 1,4-dihydropyridine with aromatic alpha,beta-epoxyketones in acetonitrile selectively breaks the Calpha-O bond of the epoxides giving the corresponding beta-hydroxyketones in excellent yields. (C) 2002 Elsevier Science Ltd. All rights reserved.
A Direct Catalytic Enantioselective Aldol Reaction via a Novel Catalyst Design
作者:Barry M. Trost、Hisanaka Ito
DOI:10.1021/ja003033n
日期:2000.12.1
Stereoselective catalytic tishchenko reduction of β-hydroxyketones using scandium triflate
作者:Kevin M. Gillespie、Ian J. Munslow、Peter Scott
DOI:10.1016/s0040-4039(99)01986-3
日期:1999.12
A number of aliphatic and aromatic beta-hydroxyketones were reduced to 1,3-diol monoesters by aldehydes in the presence of a catalytic amount of scandium triflate. Chiral substrates were reduced with high 1,3-anti diastereoselectivity. (C) 1999 Elsevier Science Ltd. All rights reserved.
Sc(OTf)<sub>3</sub>-Catalyzed C–C Bond-Forming Reaction of Cyclic Peroxy Ketals for the Synthesis of Highly Functionalized 1,2-Dioxene Endoperoxides
作者:Haowei Feng、Yukun Zhao、Pengkang Liu、Lin Hu
DOI:10.1021/acs.orglett.1c00056
日期:2021.3.5
A new and general Sc(OTf)3-catalyzed C–C bond-forming reaction of 3-(2-methoxyethoxy)-endoperoxy ketals with silyl ketene acetals, silyl enol ethers, allyltrimethylsilane, and trimethylsilyl cyanide has been developed via the reactive peroxycarbenium ions, affording a wide range of complicated 3,3,6,6-tetrasubstituted 1,2-dioxenes bearing adjacent quaternary carbons and 3-acetyl/allyl/cyano functional
Photoinduced transformation of α,β-epoxyketones to β-hydroxyketones by Hantzsch 1,4-dihydropyridine
作者:Jun Zhang、Mei-Zhong Jin、Wei Zhang、Li Yang、Zhong-Li Liu
DOI:10.1016/s0040-4039(02)02426-7
日期:2002.12
Irradiation (lambda >300 nm) of Hantzsch 1,4-dihydropyridine with aromatic alpha,beta-epoxyketones in acetonitrile selectively breaks the Calpha-O bond of the epoxides giving the corresponding beta-hydroxyketones in excellent yields. (C) 2002 Elsevier Science Ltd. All rights reserved.