Nickel-Catalyzed Cycloaddition of 1,3-Dienes with 3-Azetidinones and 3-Oxetanones
作者:Ashish Thakur、Megan E. Facer、Janis Louie
DOI:10.1002/anie.201306869
日期:2013.11.11
A growth and expansion strategy: A Ni/P(p‐tol)3‐catalyzed cycloaddition of 1,3‐dienes with 3‐azetidinones and 3‐oxetanones produced eight‐membered heterocycles with a variety of substituents (see scheme; Boc=tert‐butoxycarbonyl). The synthesis of the reduced azocine and oxocine derivatives involved the challenging steps of C(sp2)C(sp3) bond activation and C(sp3)C(sp3) reductive elimination.