作者:Sebastian Torker、David Kvaskoff、Curt Wentrup
DOI:10.1021/jo4027897
日期:2014.2.21
Mild flash vacuum thermolysis of tetrazolo[1,5-b]pyridazines 8T generates small amounts of 3-azidopyridazines 8A (8aA, IR 2145, 2118 cm–1; 8bA, 2142 cm–1). Photolysis of the tetrazoles/azides 8T/8A in Ar matrix generates 3-pyridazinylnitrenes 9, detected by ESR spectroscopy (9a: D/hc = 1.006; E/hc = 0.003 cm–1). Cyanovinylcarbenes 11, derived from 4-diazobut-2-enenitriles 10, are also detected by ESR
四唑并[1,5- b ]哒嗪8T的温和快速真空热解会生成少量的3-叠氮基哒嗪8A(8aA,IR 2145,2118 cm –1;8bA,2142 cm –1)。在Ar基质中对四唑/叠氮化物8T / 8A进行光解会生成3-吡啶并氮杂氮基9,通过ESR光谱法检测到(9a:D / hc = 1.006;E / hc = 0.003 cm –1)。Cyanovinylcarbenes 11,由4- diazobut -2- enenitriles衍生10,也可以通过ESR光谱法检测(11a:D / hc = 0.362;E / hc = 0.021 cm –1)。卡宾11重排为氰基亚勒烯12和3-氰基环丙烯13。在8的光解中未观察到三氮杂七庚烯20。在254 nm的Ar矩阵中对四唑并[1,5- a ]嘧啶/ 2-叠氮基吡啶18T / 18A进行光解可得到2-嘧啶基亚硝酸19,可通过ESR,UV和IR光谱法观察到(19a:ESR:D