THE USE OF UREA DERIVATIVES IN HETEROCYCLIC SYNTHESIS.
Abstract
This report deals with the reactions between diguanides and carbodiimides. The parent compound, diguanide, affords good yields of 1monosubstituted melamines: 1-ary1-diguanides produce N, N,-disubstituted melamines while 1,2diaryldiguanides give rise to N,N,N,-triarylisomelamines. Interaction of guanidine with carbodiimides produces, in two successive stage, 1,2-diaryldiguanides and thence N,N,N,- triarylisomelamines. Chemical properties, and the spectra of the melamines are discussed. The reactions presented form a novel general and flexible route to melamines. Corresponding reactions between diguanides and isothiocyanates were investigated. Diguanide itself yields a series of products formulated as 1-aryl-2-thiono -4,6-diiminohexahydro-s-triazines. Interaction involoving 1-aryldiguanides, proceeds with loss of H2S, and production of mixtures of N, N,- diarylmelamines and ring-substituted isomers. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1963
- Accession Number
- AD0422744
Entities
Organizations
- University of London