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Niementowski-type synthesis of pyrido[3,2-e][1,2,4]triazines: potent aza-analogs of pyrido[2,3-b]pyrazine fungicides |
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| Authors: | Patrick J. Crowley,Urs Mü ller,Olivia-A. Sageot,Alexander Bartovi? |
| Affiliation: | a Syngenta, Chemistry Department, Jealott’s Hill International Research Centre, Bracknell, Berkshire, RG42 6EY, United Kingdom b Syngenta Crop Protection AG, Crop Protection Research, Research Chemistry, Schaffhauserstr. 101, CH-4332 Stein, Switzerland c Synkola Ltd, Mlynska dolina, areal PvF UK, 84215 Bratislava, Slovakia |
| Abstract: | Novel trisubstituted pyrido[3,2-e][1,2,4]triazines have been found to possess similar biological activity to the corresponding pyridopyrazine fungicides against important phytopathogens such as Mycosphaerella graminicola (wheat leaf blotch), Magnaporthe grisea (rice blast), and Rhizoctonia solani (rice sheath blight). They have been prepared for the first time from a monocyclic triazine by Niementowski-type ring condensation. |
| Keywords: | Heterocycle Triazine Pyridotriazine Niementowski reaction Fungicide |
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