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.
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.