3(2<i>H</i>)Furanone derivatives. Ring-chain tautomerism in the 1,3,4,6-tetraketone series
作者:M. Poje、K. Balenovic
DOI:10.1002/jhet.5570160301
日期:1979.4
Ring-chain tautomeric equilibria in the 1,3,4,6-tetraketone series 1 have been examined and the identification of the chain-form 2 and hydroxyfuranone 3 has been accomplished from 1H-nmr spectra; the relative contribution of the two depends on the structure and also on the solvent. Conversions of 1 into 3(2H)furanones 4 and 5 involving the cyclic tautomer 3 are described.
在1,3,4,6-四酮系列环链的互变异构平衡1已经被检查和链形式的标识2和羟基呋喃酮3已经从完成1个H-NMR谱; 两者的相对贡献取决于结构以及溶剂。描述了涉及环状互变异构体3的1到3(2 H)呋喃酮4和5的转化。