Please use this identifier to cite or link to this item: https://doi.org/10.1055/s-2006-926290
Title: Microwave-assisted synthesis of s-triazino[2,1-b][1,3]benzoxazoles, s-triazino[2,1-b][1,3]benzothiazoles, and s-triazino[1,2-a]benzimidazoles
Authors: Dolzhenko, A.V. 
Chui, W.-K. 
Dolzhenko, A.V.
Keywords: Carbonylation
Microwave irradiation
Triazinobenzimidazoles
Triazinobenzothiazoles
Triazinobenzoxazoles
Issue Date: 15-Feb-2006
Citation: Dolzhenko, A.V.,Chui, W.-K.,Dolzhenko, A.V. (2006-02-15). Microwave-assisted synthesis of s-triazino[2,1-b][1,3]benzoxazoles, s-triazino[2,1-b][1,3]benzothiazoles, and s-triazino[1,2-a]benzimidazoles. Synthesis (4) : 597-602. ScholarBank@NUS Repository. https://doi.org/10.1055/s-2006-926290
Abstract: 2-Amino-4-oxo-derivatives of s-triazino[2,1e][1,3]benzoxazoles, s-triazino[2,1,b][1,3]benzothiazoles, and s-triazino[1,2-a]benzimidazoles were synthesized by carbonylation of 2-benz-oxazolylguanidines, 2- benzothiazolylguanidines, and 2-benzimidazolylguanidines with phenyl isocyanate under microwave irradiation (180°C, 15 minutes). Using phenyl isothiocyanate instead of phenyl isocyanate under the same conditions led to the successful ring closure via thiocarbonylation of 2-benzoxazolylguanidines. However, the formation of 2-imino-4-phenylimino-s-triazino[2,1-b][1,3]benzothiazoles from 2-benzothiazolylguanidines was observed instead under microwave irradiation conditions. © Georg Thieme Verlag Stuttgart.
Source Title: Synthesis
URI: http://scholarbank.nus.edu.sg/handle/10635/106150
ISSN: 00397881
DOI: 10.1055/s-2006-926290
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