- The Chemistry of 1,2,4-Triazines, XIV. - Synthesis and Reactions of 5-Chloro-1,2,4-triazines
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5-Chloro-1,2,4-triazines 4 are prepared from 1,2,4-triazin-5(2H)-ones 3 and transfered into 5-amino- (7), 5-cyano (8), and 5-(ω-alkinyloxy)-1,2,4-triazines (9). 7a-d are cyclized to imidazo1,2,4-triazines (10a-d).
- Neunhoeffer, Hans,Reichel, Diethard,Cullmann, Birgit,Rehn, Ingrid
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p. 631 - 640
(2007/10/02)
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- STUDIES ON as-TRIAZINE DERIVATIVES. VIII. SYNTHESIS OF 5-SUBSTITUTED 1,2,4-TRIAZINES
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Dehydroxy-chlorination of 6-methyl-3-phenyl (3a), and 3,6-diphenyl-5-oxo-2,5-dihydro-1,2,4-triazine (3b) afforded the corresponding 5-chloro-1,2,4-triazines (4a,b).The chloro-1,2,4-triazines (4a,b) treated with sodium alkoxides or amines to give the 5-alk
- Konno, Shoetsu,Ohba, Setsuya,Agata, Mitsuko,Aizawa, Yuichi,Sagi, Mataichi,Yamanaka, Hiroshi
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p. 3259 - 3264
(2007/10/02)
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- STUDIES ON as-TRIAZINE DERIVATIVES. IV. SYNTHESIS OF UNSYMMETRICAL 5,6-DISUBSTITUTED 1,2,4-TRIAZINES
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The reaction of 5-chloro-6-methyl-3-phenyl-1,2,4-triazine (4a) with ethylidenetriphenylphosphorane followed by the hydrolysis of the resulting as-triazinylphosphorane afforded 5-ethyl-6-methyl-3-phenyl-1,2,4-triazine (6a) in 88 percent yield.The condensat
- Konno, Shoetsu,Sagi, Mataichi,Agata, Mitsuko,Aizawa, Yuichi,Yamanaka, Hiroshi
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p. 2241 - 2244
(2007/10/02)
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