Lewis-acid promoted addition of 2-trimethylsilyloxyfuran to nitrones: Synthesis and absolute configuration of tetrahydro-2-benzyl-3-(1-benzyloxyethyl)-furo[2,3-d]isoxazol-5(2H)ones
摘要:
A straightforward synthesis of tetrahydro-2-benzyl-3-(1-benzyloxyethyl)-furo [2,3-d]isoxazol-5(2H)ones is reported, based on the Lewis acid-catalysed addition of 2-trimethylsilyloxyfuran to the N-benzyl nitrone of (S)-lactaldehyde. Copyright (C) 1996 Elsevier Science Ltd
Lewis-acid promoted addition of 2-trimethylsilyloxyfuran to nitrones: Synthesis and absolute configuration of tetrahydro-2-benzyl-3-(1-benzyloxyethyl)-furo[2,3-d]isoxazol-5(2H)ones
摘要:
A straightforward synthesis of tetrahydro-2-benzyl-3-(1-benzyloxyethyl)-furo [2,3-d]isoxazol-5(2H)ones is reported, based on the Lewis acid-catalysed addition of 2-trimethylsilyloxyfuran to the N-benzyl nitrone of (S)-lactaldehyde. Copyright (C) 1996 Elsevier Science Ltd
Regio- and stereoselective synthesis of isoxazolidine derivatives by asymmetric 1,3-dipolar cycloaddition reaction of chiral nitrones with 1-propene-1,3-sultone
作者:Hong-Kui Zhang、Wing-Hong Chan、Albert W. M. Leeb、Wai-Yeung Wong
DOI:10.1002/jhet.5570450402
日期:2008.7
Asymmetric 1,3-dipolar cycloadditions of chiral nitrones to 1-propene-1,3-sultone (1) were investigated. Chiral nitrones 6a-e reacted with sultone 1 in toluene at 90 °C for 24-36 h to give the corresponding isoxazolidines in moderate yields with high regioselectivities and stereoselectivities. The diastereoselectivity of this reaction varied with the choice of dipolarophile and the steric demands of
Diastereoselective Hydrocyanation of Chiral Nitrones. Synthesis of Novel α-(Hydroxyamino) Nitriles
作者:P. Merino、A. Lanaspa、F. L. Merchan、T. Tejero
DOI:10.1021/jo961293a
日期:1996.1.1
Lewis-acid promoted addition of 2-trimethylsilyloxyfuran to nitrones: Synthesis and absolute configuration of tetrahydro-2-benzyl-3-(1-benzyloxyethyl)-furo[2,3-d]isoxazol-5(2H)ones
A straightforward synthesis of tetrahydro-2-benzyl-3-(1-benzyloxyethyl)-furo [2,3-d]isoxazol-5(2H)ones is reported, based on the Lewis acid-catalysed addition of 2-trimethylsilyloxyfuran to the N-benzyl nitrone of (S)-lactaldehyde. Copyright (C) 1996 Elsevier Science Ltd