Direct synthesis of 3-halo-3-arylacrylonitriles from the addition of cyanoalkynes with alkaline metal halides
作者:Zhipeng Guan、Zhiwen Liu、Wei Shi、Hao Chen
DOI:10.1016/j.tetlet.2017.07.104
日期:2017.9
An efficient synthesis of 3-halo-3-arylacrylonitrile is described from the direct addition between cyanoalkynes and inorganic alkaline metal halides such as LiCl, LiBr and KI in good to satisfactory yields. No transition metal is needed for the synthesis of iodo- and bromo-products, although Pd catalyst is used to accelerate the chloro-product.
Transition Metal-Free Approach to Propynenitriles and 3-Chloropropenenitriles
作者:Pawan K. Sharma、Sita Ram、Navneet Chandak
DOI:10.1002/adsc.201501103
日期:2016.3.17
A transitionmetal‐free, facile and efficient one‐pot protocol for the synthesis of propynenitriles from readily available 3‐chloropropenals is disclosed. The reaction conditions have also been optimized for the exclusive formation and isolation of 3‐chloropropenenitriles which are important building blocks in general and are intermediates in the synthesis of propynenitriles. The hallmark of the methodology
Regio- and Stereoselective Chlorocyanation of Alkynes
作者:Alejandro G. Barrado、Adam Zieliński、Richard Goddard、Manuel Alcarazo
DOI:10.1002/anie.201705851
日期:2017.10.16
A variety of terminal and internal alkynes were converted regio‐ and stereoselectively into (Z)‐3‐chloroacrylonitriles by treatment with BCl3 in the presence of stoichiometric amounts of imidazolium thiocyanates. These products could be readily functionalized to provide useful building blocks, thus demonstrating the synthetic value of the method. Preliminary mechanistic studies suggest initial activation
Synthesis and Biological Evaluation of 2-(3‘,4‘,5‘-Trimethoxybenzoyl)-3-Amino 5-Aryl Thiophenes as a New Class of Tubulin Inhibitors
作者:Romeo Romagnoli、Pier Giovanni Baraldi、Vincent Remusat、Maria Dora Carrion、Carlota Lopez Cara、Delia Preti、Francesca Fruttarolo、Maria Giovanna Pavani、Mojgan Aghazadeh Tabrizi、Manlio Tolomeo、Stefania Grimaudo、Jan Balzarini、Mary Ann Jordan、Ernest Hamel
DOI:10.1021/jm060804a
日期:2006.10.1
2-(3',4',5'-Trimethoxybenzoyl)-3-amino-5-aryl/heteroaryl thiophene derivatives were synthesized and evaluated for antiproliferative activity, inhibition of tubulin polymerization, and cell cycle effects. SARs were elucidated with various substitutions on the aryl moiety 5-position of the thienyl ring. Substituents at the para-position of the 5-phenyl group showed antiproliferative activity in the order