作者:Maria Luisa Testa、Rosaria Ciriminna、Chakib Hajji、Elena Zaballos Garcia、Marco Ciclosi、Jose Sepulveda Arques、Mario Pagliaro
DOI:10.1002/adsc.200303239
日期:2004.5
diols to aminohydroxy acids by oxidation of the primary hydroxy group mediated by homogeneous and heterogeneous TEMPO (2,2,6,6-tetramethylpiperidine 1-oxyl radical) is reported. The synthesis uses NaOCl as primary oxidant and TEMPO, either dissolved in the homogeneous phase or entrapped in a sol-gel matrix, as catalytic mediator. Homogeneous TEMPO is suitable for the oxidation of aliphatic methylamino
据报道,通过均相和非均相TEMPO(2,2,6,6-四甲基哌啶1-氧基)介导的伯羟基的氧化,氨基二醇向氨基羟基酸的转化。合成过程使用NaOCl作为主要氧化剂,而TEMPO则溶解在均相中或截留在溶胶-凝胶基质中作为催化介质。均相TEMPO适用于脂肪族甲基氨基二醇的氧化,而杂化有机-无机二氧化硅溶胶-凝胶催化剂是苄基氨基二醇氧化的选择性更高的介体,例如强效的抗生素氯霉素,在均质条件下不会选择性地氧化为苯甲酸。酸。