On the Reaction of Some Saccharin Derivatives with Hydrazine and Other Nucleophils
作者:Danuta Jarecka、Anita Besch、Hans-Hartwig Otto
DOI:10.1007/s00706-002-0531-6
日期:2003.5.1
characterized as hydrazones by reactions with different ketones. The 3-thioxo compounds were prepared by reactions with P2s5, but the yield was improved by using Lawesson ’s reagent. No attack at the ester group was observed. Finally, reactions of the saccharin-2-carboxylate with some amino acids gave substituted benzamides by attack at position 3 and ring opening. In none of the reactions of the saccharin derivatives
如文献报道,糖精-2-乙酸甲酯与肼的反应没有得到糖精的3-肼基衍生物,但是在苯并肼衍生物的开环下产生。当糖精-2-(2-丙酸酯)与肼反应时,观察到类似反应。此外,使用过量的肼,酯基也转化为碳酰肼。通过与不同的酮反应,将所有酰肼完全表征为。通过与P 2 s 5反应制备了3-thioxo化合物,但使用 Lawesson 提高了产率 的试剂。没有观察到对酯基的攻击。最后,糖精-2-羧酸酯与一些氨基酸的反应通过在3位的进攻和开环而得到取代的苯甲酰胺。在糖精衍生物与氮亲核试剂的任何反应中,均未观察到3-氧代基团的形式取代。
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