FLASH VACUUM PYROLYSIS OF 2-BENZYLPYRIDINE<i>N</i>-OXIDES. SYNTHESIS OF METHYLPYRIDO[1,2-<i>a</i>]INDOLES
作者:Akio Ohsawa、Takayuki Kawaguchi、Hiroshi Igeta
DOI:10.1246/cl.1981.1737
日期:1981.12.5
Flash vacuum pyrolysis of 2-benzylpyridine N-oxides afforded pyrido[1,2-a]-indole and its various methyl-substituted derivatives in moderate yields. Benzo[g]quinoline in the pyrolyses of 2-(o-methylbenzyl)pyridine N-oxide and 2-benzyl-3-methylpyridine Noxide, and 2-(β-styryl)pyridine in the reaction of 2-(β-phenethyl)pyridine N-oxide were major products as exceptional cases.
2-苄基吡啶N-氧化物的快速真空热解以中等产率得到吡啶并[1,2-a]-吲哚及其各种甲基取代衍生物。苯并[g]喹啉在2-(o-甲基苄基)吡啶N-氧化物和2-苄基-3-甲基吡啶N氧化物的热解中,以及2-(β-苯乙烯基)吡啶在2-(β-苯乙基)反应中的热解作为特例,吡啶N-氧化物是主要产品。