75225-11-5Relevant articles and documents
SYNTHESE DE NOUVELLES PROPENAMIDINES N-SUBSTITUEES A PARTIR DE SELS DE NITRILIUM
Bril, Marc Van Den,Fuks, Robert
, p. 433 - 440 (2007/10/02)
A number of N-t-butylpropenamidines V have been prepared for the first time by amination of N-t-butylacrylonitrilium (IIIb) or N-t-butylmethacrylonitrilium tetrachloroferrate (IIIc).The salts IIIb and IIIc are easily prepared at -40 deg C within a few minutes from the corresponding nitrile, t-butyl chloride and ferric chloride.The amination (with primary or secondary aliphatic or aromatic amines) should be started at -70 deg C to ensure a smooth reaction and to give high yields of amidine V, because the nitrilium salts are unstable above -10 deg C.This method represents an easy one-pot synthesis of N-t-butyl substituted propenamidines from the corresponding nitrile I.