Dimerization of N-(pyrid-2-YL)- and N-(5-methylpyrid-2-YL) cyanoacetamides by the action of butylthiodibutylborane

The reaction of N-(pyrid-2-yl) and N-(5-methyipyrid-2-yl) cyanoacetamides with butylthiodibutylborane in a 23 ratio leads to the formation of trinuclear complex boron compounds, the alcoholysis of which gave N,N-di(pyrid-2-yl) 3-amino-2-cyanopent-2-ene-1,5-diamides. The latter are dimers of the starting cyanamides, which are capable of acting as hexadentate chelating agents.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 1, pp. 168–173, January, 1991.