Department of Chemistry, Columbia University , New York, New York 10027, United States.
Department of Chemistry, Colorado State University , Fort Collins, Colorado 80523, United States.
J Am Chem Soc. 2017 Oct 25;139(42):14897-14900. doi: 10.1021/jacs.7b09306. Epub 2017 Oct 12.
Visible light photoredox catalysis enables direct γ- C(sp)-H alkylation of saturated aliphatic carbonyl compounds. Electron-deficient alkenes are used as the coupling partners in this reaction. Distinguished site selectivity is controlled by the predominant 1,5-hydrogen atom transfer of an amidyl radical generated in situ.
可见光阴极催化实现了饱和脂肪族羰基化合物的直接γ-C(sp3)-H 烷基化。在该反应中,缺电子烯烃被用作偶联试剂。通过原位生成的酰基自由基的主要 1,5-氢原子转移来控制显著的位置选择性。