Solvent-controlled photocatalytic divergent cyclization of alkynyl aldehydes: access to cyclopentenones and dihydropyranols
作者:Haiqian Zhu、Hanliang Zheng、Junhua Zhang、Jian Feng、Lichun Kong、Fang Zhang、Xiao-Song Xue、Gangguo Zhu
DOI:10.1039/d1sc03416b
日期:——
Divergent synthesis is a powerful strategy for the fast assembly of different molecular scaffolds from identical starting materials. We describe here a solvent-controlled photocatalytic divergent cyclization of alkynyl aldehydes with sulfonyl chlorides for the direct construction of highly functionalized cyclopentenones and dihydropyranols that widely exist in bioactive molecules and natural products
发散合成是从相同的起始材料快速组装不同分子支架的强大策略。我们在这里描述了炔醛与磺酰氯的溶剂控制光催化发散环化,用于直接构建广泛存在于生物活性分子和天然产物中的高度官能化环戊烯酮和二氢吡喃醇。密度泛函理论计算表明,唯一的N , N-二甲基乙酰胺辅助烷氧基的 1,2-氢转移是环戊烯酮形成的原因,而 C-C 裂解是在 50°C 的乙腈和水中选择性产生二氢吡喃醇的原因。由于反应条件简单温和,官能团相容性好,最多可形成四个化学键,选择性可调,在合成化学中可能会有广泛的应用。