SmI2 was used as reducing agent for the N-O bond cleavage in isoxazolidines. The procedure revealed is general and particularly useful for the transformation of 5-spirocyclopropane isoxazolidines to the corresponding beta-aminocyclopropanols, a troublesome transformation with other known reagents. (C) 2004 Elsevier Ltd. All rights reserved.
Rearrangement of isoxazoline-5-spiro derivatives. 2. Synthesis and rearrangement of tetrahydroisoxazole-5-spirocyclopropanes. Preparation of precursors of quinolizine, isoquinoline, and indole alkaloids
Rearrangement of nitrone cycloadducts to methylene cyclopropane. Synthesis of indolizidine and quinolizidine derivatives.
作者:A. Brandi、A. Guarna、A. Goti、F. De Sarlo
DOI:10.1016/s0040-4039(00)84358-0
日期:1986.1
Isoxazolidines , obtained by cycloaddition of nitrones with methylene cyclopropane, undergo thermal rearrangement to piperidin-4-one derivatives. Indolizidine and quinolizidine derivatives are obtained from cyclic nitrones.
Rearrangement of isoxazoline-5-spiro derivatives. 2. Synthesis and rearrangement of tetrahydroisoxazole-5-spirocyclopropanes. Preparation of precursors of quinolizine, isoquinoline, and indole alkaloids
作者:Alberto Brandi、Sandro Garro、Antonio Guarna、Andrea Goti、Franca Cordero、Francesco De Sarlo
DOI:10.1021/jo00246a008
日期:1988.5
Samarium(II) iodide reduction of isoxazolidines
作者:Julia Revuelta、Stefano Cicchi、Alberto Brandi
DOI:10.1016/j.tetlet.2004.09.050
日期:2004.11
SmI2 was used as reducing agent for the N-O bond cleavage in isoxazolidines. The procedure revealed is general and particularly useful for the transformation of 5-spirocyclopropane isoxazolidines to the corresponding beta-aminocyclopropanols, a troublesome transformation with other known reagents. (C) 2004 Elsevier Ltd. All rights reserved.