Modular syntheses of isoxazoloazepinones and pyrazoloazepinones
作者:Mauro F.A. Adamo、Eleanor F. Duffy、Donato Donati、Piero Sarti-Fantoni
DOI:10.1016/j.tet.2007.01.018
日期:2007.3
Herein we described an optimised synthesis of isoxazoloazepi none and novel heterocycle pyrazoloazepinone. These syntheses are modular in nature and fast to execute. The title compounds were obtained pure without the intervention of chromatography. (c) 2007 Elsevier Ltd. All rights reserved.
BARACCHI, ANTONELLA;CHIMICHI, STEFANO;SIO, FRANCESCO DE;DONATI, DONATO;PO+, HETEROCYCLES, 31,(1990) N0, C. 1823-1831
作者:BARACCHI, ANTONELLA、CHIMICHI, STEFANO、SIO, FRANCESCO DE、DONATI, DONATO、PO+
DOI:——
日期:——
Practical route for N,O-heteroatom interchange in 3,5-disubstituted-4-nitroisoxazoles
Reaction of 3-methyl-4-nitro-5-alkylisoxazoles with hydroxylamine provides a practical means to interchange the N,O-heteroatoms on the isoxazole core thereby expanding the range of compounds obtainable from 3-methyl-4-nitro-5-styrylisoxazoles. (c) 2007 Elsevier Ltd. All rights reserved.
Baracchi, Antonella; Chimichi, Stefano; Sio, Francesco De, Heterocycles, 1990, vol. 31, # 10, p. 1823 - 1831
作者:Baracchi, Antonella、Chimichi, Stefano、Sio, Francesco De、Donati, Donato、Polo, Cecilia、Sarti-Fantoni, Piero
DOI:——
日期:——
Preparation of mono-labelled aliphatic polyacids via isoxazole derivatives
A method allowing the selective oxygen labelling of aliphatic polyacids, for example, succinic and glutaric acids, is reported. This process is based on the hydrolysis of a 3-alkyl-4-nitroisoxazol-5-yl group by Na18OH and affords the products in high yields. The same procedure was applied for the preparation of labelled aliphatic carboxylic acids.