Regioselectivity in S<sub>N</sub>H reactions of some 3-nitro-1,5-naphthyridines with chloromethyl phenyl sulfone
作者:Maria Grzegożek、Barbara Szpakiewicz
DOI:10.1139/v04-001
日期:2004.5.1
3-Nitro-1,5-naphthyridine and its 2-substituted derivatives react with the carbanion of chloromethyl phenyl sulfone to give hydrogen-substitution products at position 4 in high yield. The intermediacy of 4-(phenylsulfonyl)chloromethyl σ adducts of 2-R-3-nitro-1,5-naphthyridines (R = H, D, Cl, OC2H5, NHCH3, OH) was established by 1H NMR spectroscopy. A convenient synthesis of 2-N-methylamino-3-nitro-1
3-硝基-1,5-萘啶及其2-取代衍生物与氯甲基苯砜的碳负离子反应,以高产率在4位生成氢取代产物。2-R-3-硝基-1,5-萘啶 (R = H, D, Cl, OC2H5, NHCH3, OH) 的 4-(苯磺酰基) 氯甲基 σ 加合物的中间体通过 1H NMR 光谱确定。报告了 2-N-methylamino-3-nitro-1,5-naphthyridine 的方便合成。关键词:3-硝基-1,5-萘啶,阴离子(苯磺酰基)氯甲基σ加合物,替代亲核取代。