Synthesis of 7-Azidofurazano[3,4-b]tetrazolopyrazine and Isomer's Structure in Different Polarity Solvents
作者:Tao Guo、Min Liu、Jun Jiang、Shao-Jun Qiu、Zhong-Xue Ge
DOI:10.14233/ajchem.2013.14164
日期:——
7-Azidofurazano[3,4-b]tetrazolopyrazine (FSZPA) was synthesized via methoxylation, nitration hydrazinolysis and azidation, using 2,6- dichloropyrazine as a starting material. The structures of 7-azidofurazano[3,4-b]tetrazolopyrazine and intermediates were identified by FTIR, NMR and elemental analysis. 15N and 13C NMR spectra showed three isomer forms resulting from the reversible opening and closing between asido and tetrazole depending on polarity of the solvents.
以 2,6- 二氯吡嗪为起始原料,通过甲氧基化、硝化肼解和叠氮化反应合成了 7-叠氮呋喃并[3,4-b]四唑吡嗪(FSZPA)。通过傅立叶变换红外光谱、核磁共振和元素分析,确定了 7-叠氮呋喃并[3,4-b]四唑吡嗪和中间体的结构。15N 和 13C NMR 光谱显示了三种异构体形式,它们是由asido 和四唑之间的可逆开闭作用产生的,这取决于溶剂的极性。