Synthesis and Dynamic NMR Studies of Some New Symmetrical Podands of Dithiocarbamates Formed from Bis(N-thiazol)chloroacetamides
作者:Abbas Shockravi、Mahmood Kamali、Azim Ziyaei Halimehjani、Reza Jafari
DOI:10.1002/jhet.915
日期:2013.3
Reactions of dithiocarbamates salts (IVa, IVb, IVc) with bis(N‐thiazol) chloroacetamides(IIa, IIb) in DMF furnished corresponding podands as Va, Vb, Vc, Vd, Ve, Vf in high to excellent yields. Two reacting ligands (IIa, IIb) were obtained in the reaction of bis(aminothiazoles) (Ia, Ib) with chloroacetyl chloride. Dynamic NMR spectroscopic data of two series of podands (Va, Vb, Vc and Vd, Ve, Vf) are
二硫代氨基甲酸盐(IVa,IVb,IVc)与双(N-噻唑)氯乙酰胺(IIa,IIb)在DMF中的反应以高到极好的收率提供了相应的豆荚,如Va,Vb,Vc,Vd,Ve,Vf。在双(氨基噻唑)(Ia,Ib)与氯乙酰氯的反应中获得了两个反应配体(IIa,IIb)。两个Podand系列(Va,Vb,Vc的动态NMR光谱数据。和Vd,Ve,Vf)进行了讨论,并指出了它们在聚结温度下的活化自由能()。由于对硫酰胺C-N键的旋转和共振效应,这些豆荚的s归因于14.9-16.2 kcal / mol范围内的构象异构化。