作者:Andrea Serafino、Davide Balestri、Luciano Marchiò、Max Malacria、Etienne Derat、Giovanni Maestri
DOI:10.1021/acs.orglett.0c02193
日期:2020.8.21
Enallenes can be readily converted into two families of 3.2.0 (hetero)bicycles with high diastereoselectivities through the combination of visible light with a suitable Ir(III) complex (1 mol %). Two complementary pathways, namely, a photocycloaddition versus a radical chain, can then take place. Both manifolds grant complete regiocontrol of the allene difunctionalization. This is accompanied by an
通过将可见光与合适的 Ir(III) 配合物 (1 mol %) 结合,Enallenes 可以很容易地转化为具有高非对映选择性的两个 3.2.0(杂)自行车家族。然后可以发生两个互补的途径,即光环加成与自由基链。两种流形都可以完全控制丙二烯双官能化。这伴随着使用磺酰基丙二烯酰胺的原始 1,3-基团转移,在相应的产品中提供拥挤的四取代头桥碳。