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ChemInform Abstract: A Convenient Route to Synthesize 1,2,4-Triazolo[1,5-a]pyrimidine Derivatives and Their One and Two-Photon Absorption Spectral Properties.

✍ Scribed by Hongli Wang; Wenyuan Xu; Yi Dai; Bin Zhang; Qiongyou Wu; Dingli Wang; Mingzhi Zhang; Min Tian; Hong Wu


Publisher
John Wiley and Sons
Year
2008
Weight
23 KB
Volume
39
Category
Article
ISSN
0931-7597

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✍ Hongli Wang; Wenyuan Xu; Yi Dai; Bin Zhang; Qiongyou Wu; Mingzhi Zhang; Min Tian πŸ“‚ Article πŸ“… 2007 πŸ› Journal of Heterocyclic Chemistry 🌐 English βš– 346 KB

## Abstract magnified image A convenient method for synthesizing α‐(1,2,4‐triazolo[1,5‐__a__]pyrimidine‐2‐sulfonyl)methane derivatives, **3** and **4**, by the well known Knoevenagel reaction, in one step, is described. The two chromophores are stilbene‐type chromophores containing the same D‐π‐A

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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