Preparation of a zeolite X-encapsulated copper(ii) chloride complex and its catalysis for liquid-phase oxygenation of enamines in the presence of molecular oxygen
Copper(II) chloride complexes were readily prepared within pores of zeolite X with the modified zeolite found to act as a heterogeneous catalyst for the oxygenation of a variety of enamines in the presence of molecularoxygen without leaching of the active copper species.
氯化铜 (II) 络合物很容易在沸石 X 的孔内制备,改性沸石被发现可作为多相催化剂,用于在分子氧存在下氧化各种烯胺,而不会浸出活性铜物质。
v-Triazolines. Part 37. Rearrangement reactions of 5-amino-1-(2-formyl-, -benzoyl-, -cyano-aryl)-ν-triazolines: new synthesis of 2-amino- and 2,4-diamino-quinolines and 2,4-diamino-1,7-naphthyridines
作者:Egle M. Beccalli、Emanuela Erba、Maria Luisa Gelmi、Donato Pocar
DOI:10.1039/p19960001359
日期:——
2-Aminoquinolines 4 were obtained in an one-pot reaction from arylacetaldehydes 1, secondary amines 2 and aryl azides 3 in refluxing benzene or xylene. 2,4-Diaminoquinolines and 2,4-diamino-l,7-naphthyridines 9 were prepared by heating arylacetaldehydes 1 with secondary amines 2 and aryl or pyridyl azides 8 and reaction with bases. Reaction intermediates were shown in certain cases to be 5-amino-ν-triazolines
We have developed a novel procedure for the oxidative cleavage of indole carbon double bonds in the presence of H2O2 using plant cell cultures as a catalytic system. The oxidative procedure has some advantages, such as mild reactions, good yields, easy work-up and safety. (C) 2004 Elsevier Ltd. All rights reserved.