作者:Nouria A. Al-Awadi、Yehia A. Ibrahim、Elizabeth John、Aneesha Parveen
DOI:10.1016/j.tet.2010.11.074
日期:2011.2
conditions including pyrolysis, dehydration under Mitsunobu conditions or with acetic anhydride or acetic acid. According to their method of synthesis these 1,2-diaza-1,3-butadienes underwent subsequent reactions to give interesting products, and in the presence of proper dienophiles gave the corresponding cycloaddition products. Also, a new approach to pyrazole-3-carboxylic acid derivatives was discovered
在各种反应条件下,包括热解,在Mitsunobu条件下脱水或用乙酸酐或乙酸,从容易获得的3-羟基-2-芳基肼基丙酸酯中获得1,2-Diaza-1,3-丁二烯。根据他们的合成方法,使这些1,2-二氮杂1,3-丁二烯进行后续反应,得到有趣的产物,并在适当的二烯亲和剂存在下得到相应的环加成产物。同样,在尝试使3-羟基-2-芳基肼基丁酸酸酯脱水的过程中,发现了一种新的吡唑-3-羧酸衍生物的方法。