作者:Christopher D. Gabbutt、John D. Hepworth、B. Mark Heron
DOI:10.1016/0040-4020(95)00874-8
日期:1995.11
Simple 2H-chromenes and 2H-thiochromenes form the [2+2]-adducts, tetrahydro[1]benzo(thio)pyrano[3,4-c] [1,2]diazeto[1,2-a][1,2,4]triazoles, with triazolinediones, whereas their 3- and 4-bromo and the corresponding cycloalkylamino derivatives undergo an overall etectrophilic substitution sequence.
简单的2 ħ -chromenes和2个ħ -thiochromenes形成[2 + 2] -adducts,四氢[1]苯并(硫)吡喃并[3,4- c ^ ] [1,2] diazeto [ 1,2-一个] [ 1,2,4 ]三唑,与triazolinediones,而他们的3-和4 -溴和相应的环烷基的衍生物经历的整体etectrophilic替代序列。