Tetrahedron Letters

High resolution NMR investigation of enolization of ethyl α-alkylacetoacetates and 3-alkylacetylacetones with branched substituents

ST Yoffe, EI Fedin, PV Petrovskii, MI Kabachnik

文献索引：Yoffe,S.T. et al. Tetrahedron Letters, 1966 , # 24 p. 2661 - 2668

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被引用次数: 9

摘要

K&o-enol equilibrium of ethyl CL-allrylacetoace-I, tates and 3-• lkylacetylacetonee in different solvents has been recently studied by MI Kabachnik, ST Yoffe, KV Vatsuro and EM Popov using bromometrical method and UV-and JR-spectra (l, 2, 3). Later in these compounds the application of GLC showed the presence of some O-alkylderivatives (4, 5) accepted by us as tram-enolic folr. So, not having direct proves of trans-enoliaation of ...