Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB7058/51A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Cyanamid CofiledCriticalAmerican Cyanamid Co
Publication of GB679605ApublicationCriticalpatent/GB679605A/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Malononitriles are prepared by heating an aliphatic nitrile with a cyanogen halide at a temperature of at least 600 DEG C. The preferred temperature is in the range 600-700 DEG C. and preferably excess nitrile is used. Superatmospheric pressures may be used if required. In the example acetonitrile is heated with cyanogen chloride to give malononitrile. If desired, cyanogen bromide may be used instead of cyanogen chloride.
GB7058/51A1950-04-081951-03-27Improvements in or relating to the preparation of malononitriles
ExpiredGB679605A
(en)