The J-flow and stability

We study the J-flow from the point of view of an algebro-geometric stability condition. In terms of this we give a lower bound for the natural associated energy functional, and we show that the blowup behavior found by Fang and Lai [11] is reflected by the optimal destabilizer. Finally we prove a general existence result on complex tori.     

环境友好碱有机催化一锅法区域选择性合成新型3,6-二芳基-4-甲基哒嗪

报道了一种新型三组分反应策略用于区域选择性合成一系列三取代的哒嗪,即于水中进行DABCO催化的苯丙酮、芳香乙二醛一水合物和水合肼三组分缩合反应。该法提供了一种绿色便利的一锅法制备各种芳基取代的3,6-二芳基-4-甲基哒嗪,它以水为溶剂, DABCO为绿色碱有机催化剂,具有高区域选择性、操作简便、产物收率高和后处理简单等优点。