Design and synthesis of new functionalized isoindigo and (3Z,3′Z)-3,3′-(ethane-1,2-diylidene)bis(indolin-2-one) derivatives
作者:Gholamhossein Khalili、Anthony C. Willis、Paul A. Keller
DOI:10.1007/s00706-018-2272-1
日期:2018.11
N-substituted isoindigo derivatives were prepared by reaction of isoindigo with a variety of alkylating agents in the presence of MeONa under mild conditions in yields of 65–80%. A new, more efficient synthesis of (3Z,3′Z)-3,3′-(ethane-1,2-diylidene)bis(indolin-2-one) is described by reaction of oxindole with glyoxal at reflux in methanol—a small library of N,N′-substituted derivatives were also prepared
摘要N,N-取代的异靛蓝衍生物的文库是通过在温和的条件下,MeONa存在下使异靛蓝与多种烷基化剂反应制备的,产率为65-80%。的一种新的,更有效的合成(3 Ž,3' Ž)-3,3' - (乙烷-1,2-二亚基)双(二氢吲哚-2-酮)通过与乙二醛羟基吲哚反应于回流的甲醇中描述—还制备了一个小的N,N'-取代衍生物库,产率为60-70%。 图形概要