A formal [3+2] cycloaddition reaction of <i>N</i>-methylimidazole as a masked hydrogen cyanide: access to 1,3-disubstitued-1<i>H</i>-1,2,4-triazoles
作者:Issa Yavari、Omid Khaledian
DOI:10.1039/d0cc01065k
日期:——
N-Methylimidazole (NMI) can act as a masked HCN in the synthesis of 1,3-disubstitued-1H-1,2,4-triazoles via a formal cycloaddition reaction of hydrazonoyl chloride with NMI. The product was proved to be formed via an initial nucleophilic substitution of hydrazonoyl chloride with NMI following cyclization and two sequential C–N bond cleavages.
N-甲基咪唑(NMI)可通过1,酰氯与NMI的正式环加成反应在合成1,3-二取代-1 H -1,2,4-三唑中充当掩蔽的HCN 。事实证明,该产物是通过环化反应和两次连续的C–N键裂解后,用NMI进行酰肼基氯的初始亲核取代而形成的。