Patent ID: 7737284

Claim:
A process for the preparation of a compound of the Formula II, wherein R is an alkyl group having from 1 to 6 carbon atoms, the process comprising: (I) condensing the compound of Formula 14, (H2N.CO.CH(NH2).CN) Formula 14, with a compound of Formula 7a, R.NH.CO.NH.CH:N.CO.NH.R Formula 7a, wherein “R” is as defined above, in an inert organic solvent; or (ii) condensing the compound of Formula 14, (H2N.CO.CH(NH2).CN) Formula 14, with an alkyl urea of the formula R—NH(CO)NH 2 , where “R” is as defined above, and an alkyl orthoformate of the formula (R 1 O) 3 CH, wherein “R 1 ” is an alkyl group having from 1 to 6 carbon atoms in an inert organic solvent.