Synthese de pyrroles et d'oxazoles par pyrolyse de N-(hydroxy-2′ ethyl) amino-3 propenoate
作者:Catherine Pale-Grosdemange、Josselin Chuche
DOI:10.1016/s0040-4020(01)81018-8
日期:1989.1
pyrolysis of various N-(2′-hydroxyethyl)-3-amino propenoates 1–6 and N-(2′-hydroxy-2′-phenyl ethyl)-3-amino propenoate 7–9 at 390°–420°C leads respectively to formylpyrroles 11–16 and benzoylpyrroles 17–19 and, in some cases, to substituted oxazoles 36–39. The results are best explained by the intermediate formation of dicarbonyl derivative followed either by an intramolecular thermal crotonisation
各种N-(2'-羟基乙基)的气体热解PHAS -3-氨基propenoates 1 - 6和N-(2'-羟基-2'-苯基乙基)-3-氨基丙烯酸7 - 9在390℃-420 ℃,引线分别formylpyrroles 11 - 16和benzoylpyrroles 17 - 19,并且在一些情况下,为了取代的恶唑36 - 39。通过中间形成二羰基衍生物,然后在分子内进行热巴豆化反应或将偶氮甲ine叶立德分子进行6π电环化,可以最好地解释该结果。