作者:Alexei I. Mushta、Mikhail M. Kremlev
DOI:10.1016/j.jfluchem.2005.06.012
日期:2005.10
A convenient method of synthesis of 1-aryloxy-2-chloro-1,2-difluoroethenes 1a-h and 1,2-di(aryloxy)-1,2-difluoroethenes 2a-d by the reaction of 1,2-dichloro-1,2-difluoroethene with substituted phenols was developed. Compounds 1a-c treated with n-C4H9Li and then with CO2 and I-2, formed 3-aryloxy-2,3-difluoroacrylic acids 3a-e or 1-aryloxy-2-iodo-1,2-difluoroethenes 4a,c, respectively. Reaction of lithium derivative of 1-(4-methylphenoxy)-2-chloro-1,2-difluroethene 1c with DMF or N-formylpiperidine gave 3-(4-methylphenoxy)-3-(dimethylamino or piperidin-1-yl)-2-fluoropropenal 5c, 6c. (c) 2005 Elsevier B.V. All rights reserved.