Novel vinyl monomers containing 1,4,5,6-tetrahydropyrimidine were prepared by the reaction of N-substituted-1,3-diaminopropane with N,N-dimethyl-formamide dimethylacetal, which gave 1-alkyl or aryl substituted 1,4,5,6-tetrahydropyrimidines, Alkylation of the tetrahydropyrimidine derivatives by chlor
Efficient Synthesis of 2-(N-Substituted)-2-imidazolines and 2-(N-Substituted)-1,4,5,6-tetrahydropyrimidines.
β Scribed by Wai Ming Kan; Shih-Hsun Lin; Ching-Yuh Chern
- Publisher
- John Wiley and Sons
- Year
- 2006
- Weight
- 17 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0931-7597
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## Abstract For Abstract see ChemInform Abstract in Full Text.
Fragmentation pathways of the title compounds under electron impact were compared to those of their (1aryl)substituted analogs reported earlier. The main fragmentation route of the M Γ ions is the sulphamide N-S bond cleavage leading to [M Γ ArSO 2 ] ions. No loss of the alkyl substituents from the
Fragmentation pathways of the title compounds were studied using accurate mass measurements and collision-induced dissociation spectra. Substituents in the ortho position of the aryl group at the pyrimidine ring were found to play a special role in the electron impact (EI) induced fragmentation of t