2-IMINOOXETANE CHEMISTRY .4. SYNTHESIS OF BETA-SUBSTITUTED PROPIONAMIDES

被引:9
|
作者
BARBARO, G [1 ]
BATTAGLIA, A [1 ]
GIORGIANNI, P [1 ]
机构
[1] CNR,IST COMPOSTI CARBONIO CONTENENTI ETREOATOMI,I-40129 BOLOGNA,ITALY
来源
JOURNAL OF ORGANIC CHEMISTRY | 1994年 / 59卷 / 04期
关键词
D O I
10.1021/jo00083a036
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
beta-substituted propionamides (RCHXCR(1)R(2)CONHAr) were synthesized in high yields by addition of protic and aprotic Lewis acids (C6H5SO3H, CF3COOH, CH3COOH, HI, MgBr2, ZnI2, CH3OH, H2O,2,4,6-(NO2)(3)C6H2OH) to 2-iminooxetanes. Studies on the stereochemistry of the acid addition to unsymmetrically C3,C4-monosubstituted 2-iminooxetanes indicate that product distribution depends on the steric and electronic nature of the substitutents of the oxetane moiety as well as on the nucleophilicity of the conjugate base derived from the acid.
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页码:906 / 913
页数:8
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