Synthetic Access to Hydrogen and Halogen Derivatives of 3-Amino-4-nitrothiophenes
作者:Eva-Janina Vogt、Viktor A. Zapol'skii、Eva Nutz、Dieter E. Kaufmann
DOI:10.1002/ejoc.201300006
日期:2013.7
The unique synthesis of 3-amino-4-nitrothiophenes 2 provides easy access to reference species of a new family of push-pull substitutedthiophenes. The chemoselective modification of 2 into suitable derivatives was accomplished by selective S-oxidation of the vinylsulfanyl unit, followed by substitution of the vinylsulfinyl group of 3 by nucleophiles. Dihalothiophenes were formed this way in very good