Potassium alkoxides of N-acyloxazolidin-2-one derived syn-aldolates undergo a novel tandem intramolecular cyclisation elimination reaction to afford trisubstituted (E)-alpha,beta-unsaturated amides in high d.e., which may be converted into their corresponding acids or oxazolines in good yield.
N-酰基氧杂唑啉-2-酮衍生的仲醛酸酯的
钾醇盐进行新型串联分子内环化消除反应,得到高取代度的三取代(E)-α,β-不饱和酰胺,可将其转化为相应的酸或
恶唑啉良品率高。