Verfahren zur Herstellung von alpha-Cyanacrylverbindungen,申请号DE19621443929-传众专利搜索

Verfahren zur Herstellung von alpha-Cyanacrylverbindungen

申请公布号：DE1443929(A1)

申请号：DE19621443929

申请日期：1962.12.07

申请公布日期：1969.03.27

申请人：

GENERAL ANILINE & FILM CORP.

发明人：KLADKO,MARTIN,LOUDONVILLE;MIN,BRONX LEE,MARK

分类号：C07C255/34;C09K15/20

主分类号：C07C255/34

摘要：A process for producing a -cyanoacrylic compounds comprises refluxing (1) a phenone with (2) a cyanomethylene compound in the presence of (A) an organic acid having a boiling point below about 165 DEG C., e.g. acetic acid, (B) a water-immiscible, inert, organic solvent boiling below the acid, e.g. benzene, and (C) ammonium ions fractionating the refluxing vapours to less than about 3% acid while maintaining a reflux rate of at least about 2.7 grams/minute/gram-mole of reactants condensing said refluxing vapours and returning condensed organic solvent in a substantially anhydrous condition to the reaction zone. In an example, benzophenone is reacted with ethylcyanoacetate in the presence of benzene and glacial acetic acid to produce ethyl a -cyano-b ,b -diphenyl acrylate. Many examples are given of the starting materials.