Intramolecular cyclizations leading to bridgehead bicyclics<b>2</b>. 5,5-dialkylhydantoin derivatives
作者:Katsuhide Okada、James A. Kelley、John. S. Driscoll
DOI:10.1002/jhet.5570140332
日期:1977.5
substituenls in the 5-position on the course of hydantoin intramolecular alkylation reactions was studied. Dialkyl and diaryl substituted intermediates resulted in the same type product, 2,3-dihydro-6,6-disubstituted imidazo[2,1-b]oxazole-5(6H)ones, indicating alkylation on oxygen rather than nitrogen. The mass spectral and nmr characteristics of these bicyclic compounds are discussed.
研究了5位取代基对乙内酰脲分子内烷基化反应过程的影响。二烷基和二芳基取代的中间体产生相同类型的产品,即2,3-二氢-6,6-二取代的咪唑并[2,1 - b ]恶唑-5(6 H)酮,表明在氧而不是氮上烷基化。讨论了这些双环化合物的质谱和nmr特性。