A New One-Pot Three-Component Synthesis of 4-Aryl-6-cycloamino-1,3,5-triazin-2-amines under Microwave Irradiation
作者:Anton V. Dolzhenko、Muhammad Syafiq Bin Shahari、Ahmad Junaid、Edward R. T. Tiekink
DOI:10.1055/a-1401-2795
日期:2021.7
A new method for the fastsynthesis of diverse 4-aryl-6-cycloamino-1,3,5-triazin-2-amines was developed. The synthesis is performed undermicrowaveirradiation in a one-pot manner from cyanoguanidine, aromaticaldehydes, and cyclic amines. Their three-component reaction in the presence of hydrochloric acid produced dihydrotriazines, which were then converted (without isolation) into the targeted compounds
Ruthenium-catalyzed synthesis of tri-substituted 1,3,5-triazines from alcohols and biguanides
作者:Ming Zeng、Tao Wang、Dong-Mei Cui、Chen Zhang
DOI:10.1039/c6nj01620k
日期:——
An efficient ruthenium-catalyzedsynthesis of tri-substituted 1,3,5-triazines from alcohols and biguanides under mild conditions has been developed. The reaction occurred in moderate to good yields and tolerated benzyl alcohol containing functionalities such as halogens. Monosubstituted to tetrasubstituted biguanidines also afforded the desired products.
�ber Reaktionen von Alkylbiguaniden mit Benzoin beimpH der Biguanidbasen
作者:H. W. Schramm、M. Schubert-Zsilavecz、A. I. Saracoglu、Ch. Kratky
DOI:10.1007/bf00811115
日期:1991.12
Alkylbiguanides 2 a-e react with benzoin (1) at the pH of the base in different ways. 1 undergoes in presence of 2 a, c oxidation to benzoic acid which reacts with the bases 2 a, c to yield 4-phenyl-1,3,5-triazinamines 3 c, 4 c; in presence of 2 b 1 is transformed to benzil, which reacts with 2 b under rearrangement to yield 1-(4-oxo-5,5-diphenyl-2-imidazolin-2-yl)-3,3-dimethylguanidine (5 b). However, the cycloalkylbiguanides 2 d, e react in presence of nitrogen as well as oxygen with 1 to yield piperidine-1-[N-(4,5-diphenylimidazol-2-yl)-carboxamidine] (7 d), resp. morpholine-4-[N-(4,5-diphenylimidazol-2-yl)-carboxamidine] (7 e). The structure of 7 e was established by means of an X-ray structure analysis. All proton- and carbon resonances were assigned on the basis of 2-dimensional NMR data.