temperature in triflic acid, 1-arylamino-1-methylthio-2-nitroethylenes give firstly C, O-protonated species then a conjugated dication with aryliminium and hydroxynitrilium sites. The last one was trapped in situ with aromatic or quenched with MeOH or MeSH to form aryliminohydroxyimino derivatives. Intramolecular reaction occurs when temperature rises. Effect of aromatic ring substituant, acidity (HF-SbF5 5:1)
在
三氟甲磺酸中,在低温下,1-芳基
氨基-1-甲
硫基-2-
硝基乙烯首先产生C,O质子化的物种,然后生成具有芳基
亚胺基和羟基腈位置的共轭配位基。最后一个用芳族化合物原位捕获,或用MeOH或MeSH淬灭以形成芳基羟基亚
氨基衍
生物。当温度升高时,发生分子内反应。还讨论了芳环取代基,酸度(HF-SbF 5 5:1)和Z / E
亚胺构型的影响。