Electron impact studies. Part XCIV. Retro-Diels–Alder reaction in negative-ion mass spectrometry. Nitro-2H,4H-1,3- and -2,3-dihydro-1,4-benzodioxins
作者:John H. Bowie、Ah Chai Ho
DOI:10.1039/p29750000724
日期:——
The first examples of specific retro-Diels–Alder reactions occurring from negative ions are reported for nitro-2H,4H-1,3- and -2,3-dihydro-1,4-benzodioxins. The extent of the retro-reaction from the nitro-1,3-benzodioxins is dependent upon the position of the nitro-group relative to the oxygenated ring. The fragmentation of model compounds has been used in order to rationalise the mechanism(s) of the
对于硝基2 H,4 H -1,3-和-2,3-二氢-1,4-苯并二恶英,报道了由负离子引起的特定的逆Diels-Alder反应的第一个例子。硝基-1,3-苯并二恶英的逆反应程度取决于硝基相对于氧化环的位置。为了使各种重排过程的机理合理化,已经使用了模型化合物的碎片化方法。