Regio and stereoselective catalytic five-component cascades of diverse heterocyclic bisallenes: tri-directional exploration of biochemical space
摘要:
We report protecting group free Pd(0) catalyzed cascade syntheses of molecular scaffolds built from heterocyclic bisallenes. These generate novel molecular architecture permitting tri-directional exploration of biochemical space. (C) 2013 Elsevier Ltd. All rights reserved.
Regio and stereoselective catalytic five-component cascades of diverse heterocyclic bisallenes: tri-directional exploration of biochemical space
作者:Elghareeb E. Elboray、Moustafa F. Aly、Hussien H. Abbas-Temirek、Gwydion H. Churchill、Ronald Grigg
DOI:10.1016/j.tet.2013.10.060
日期:2014.1
We report protecting group free Pd(0) catalyzed cascade syntheses of molecular scaffolds built from heterocyclic bisallenes. These generate novel molecular architecture permitting tri-directional exploration of biochemical space. (C) 2013 Elsevier Ltd. All rights reserved.
Improved synthesis of substituted pyrido[2,3-d]pyrimidinediones
作者:Gwydion H. Churchill、Steven A. Raw、Lyn Powell
DOI:10.1016/j.tetlet.2011.05.021
日期:2011.7
An improved methodology for the synthesis of substituted pyrido[2,3-d]pyrimidinediones from 6-aminouracils and the corresponding enaminone has been developed which provides high yields via an operationally simple process. The method has been extended to encompass a range of electron-rich enaminones, a substrate class that does not perform well under the standard conditions.
已经开发了一种由6-氨基尿嘧啶和相应的烯胺酮合成取代的吡啶并[2,3- d ]嘧啶二酮的改进方法,该方法可通过操作简单的方法提供高收率。该方法已扩展到涵盖一系列富电子烯键酮,这是在标准条件下不能很好发挥作用的底物类型。