... O N C6H4COOAlk-4 12 1b B 1b H2N(CH2)2COOH ... EtO2C CH2CN 35 + N R2 ... Cyanoacetamides and their thio- and selenocarbonyl analogues as promising reagents for fine organic synthesis 739 Published on 01 January 1999. Downloaded by google on 07/02/2016 11:21:22. ...