Employing the NHC-catalyzed activation of α,β-unsaturated N-acyltriazoles an efficient enantioselective synthesis of dihydropyranones via a formal [3+3] cycloaddition with 1,3-dicarbonyl compounds is described.
利用NHC催化的α,β-不饱和N-酰基三唑的激活,描述了一种高效的对称合成二氢
吡喃酮的方法,通过与1,3-二羰基化合物的形式[3+3]环加成反应。