C<sub>5</sub>-Alkyl-1,3,4-Oxadiazol-2-ones Undergo Dealkylation upon Nitrogen Insertion to Form 2<i>H</i>-1,2,4-Triazol-3-ones: Synthesis of 1,2,4-Triazol-3-one Hybrids with Triazolothiadiazoles and Triazolothiadiazines
作者:Pramod P. Kattimani、Ravindra R. Kamble、Atukuri Dorababu、Raveendra K. Hunnur、Atulkumar A. Kamble、H.C. Devarajegowda
DOI:10.1002/jhet.2813
日期:2017.7
study emphasizes on the dealklylation of 3‐aryl‐5‐alkyl‐2‐oxo‐Δ4‐1,3,4‐oxadiazoles when reacted with formamide resulting in the formation of 2‐aryl‐2H‐1,2,4‐triazol‐3(4H)‐ones as major product. Subsequent reactions of 2‐aryl‐2H‐1,2,4‐triazol‐3(4H)‐one gave triazolo[3,4‐b][1,3,4]thiadiazoles and triazolo[3,4‐b][1,3,4]thiadiazines derivatives incorporated with 1,2,4‐triazol‐3‐one.
本研究中强调的3-芳基-5-烷基-2-氧代- Δ的dealklylation 4 -1,3,4-恶二唑时,导致在2-芳基2的形成甲酰胺反应ħ -1,2,主要产品4-三唑-3(4 H)-1 。随后的2-芳基-2 H -1,2,4-三唑-3(4 H)-1反应产生了三唑[3,4- b ] [1,3,4]噻二唑和三唑[3,4- b ] [1,3,4]噻二嗪衍生物与1,2,4-三唑-3-酮结合。