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Synthesis of 6-(Ethoxymethylenimino)-1,2,4-triazolo[3′,4′:5,1]-[1,2,4]triazolo[4,3-a]quinazolin-7(6H)-one

✍ Scribed by Kang-Chien Liu; Ming-Kuan Hu


Publisher
John Wiley and Sons
Year
1987
Tongue
English
Weight
128 KB
Volume
320
Category
Article
ISSN
0365-6233

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A Convenient Synthesis of 1,2-Dihydro-1,2,4-triazolo[3,2-b]quinazolin-9(1H)-ones and Their 1,2,4-Triazolo Derivatives. -The one-step reaction of (I) with aldehydes such as (II) in the presence of piperidine as a base affords the title compound (III), some of which would be tedious to prepare otherw