Aqueous titanium trichloride promoted intermolecular reductive cyclization of 1,2 -diketone and o-nitroaniline in basic media provides a convenient method for the synthesis of quinoxaline derivatives.

本文研究三氯化钛水溶液作用下,邻硝基苯胺与1,2-二酮在碱性介质中分子间的成环,方便地合成取代喹喔啉类化合物的方法。

The article is about how to use phosgene and p-nitrophenylamine to react in acetic ether's liquefier to produce p-nitro-phenyl isocyanate, Its best technological condition have been discussed.

介绍用光气和对硝基苯胺在乙酸乙酯溶剂中来制备对硝基异氰酸苯酯的方法，并讨论其最佳工艺条件。