Studies on the [2,3]-Meisenheimer Rearrangement of 2-Vinylazetidine N-Oxides.
作者:Ryuji YONEDA、Lisa ARAKI、Shinya HARUSAWA、Takushi KURIHARA
DOI:10.1248/cpb.46.853
日期:——
Oxidation of 2-vinylazetidine 6a with m-chloroperbenzoic acid (mCPBA) in methylene dichloride (CH2Cl2) gave a mixture of dihydro-7H-[1, 2]oxazepine 9a and the nitrone 10a. It was clarified that the former was obtained via the [2, 3]-Meisenheimer rearrangement of the corresponding cis-N-oxide A, and the latter was formed by successive oxidation of the isoxazolidine 11 formed via the [1, 2]-Meisenheimer rearrangement of the corresponding trans-N-oxide B.
在二氯甲烷(CH 2 Cl 2 )中用间氯过苯甲酸(mCPBA)氧化2-乙烯基氮杂环丁烷6a,得到二氢-7H-[1, 2]氧氮杂9a和硝酮10a的混合物。明确前者是由相应的顺式N-氧化物A经[2, 3]-Meisenheimer重排得到,后者是由[1, 2]-Meisenheimer生成的异恶唑烷11依次氧化而成。相应反式-N-氧化物的重排 B.