Synthesis of 2-(2-Oxo-2-phenylethyl)cyclopentanone by Rhodium-Catalyzed Tandem Alkynyl Cyclobutanols Hydroacylation and Semipinacol Rearrangement
作者:Rui Guo、Xueling Mo、Guozhu Zhang
DOI:10.1021/acs.orglett.8b03973
日期:2019.3.1
A rhodium-catalyzed tandem reaction of alkynyl cyclobutanols with salicylaldehydes has been developed. The reaction offers a new and atom-economical approach for the selective preparation of multisubstituted 2-(2-oxo-2-phenylethyl)cyclopentanone in high yields under mild reaction conditions with tolerance of a broad range of substituted alkynyl cyclobutanols and salicylaldehyes. The isolation of intermediate
Oxidative Fluorocyclization of Vinyl Azides Leading to 5-Azido,5-fluoro-1,3-oxolan-2-one
作者:Lin Li、Shanshan Cao、Fanyi Lin、Peiqiu Liao、Yongquan Ning
DOI:10.1002/ejoc.201901699
日期:2020.2.14
A new strategy for alkene difunctionalization that enables the in situ introduction of a leaving group, keeping the N3 group intact is described. This transformation provides access to a variety of 5‐azido,5‐fluoro‐ 1,3‐oxolan‐2‐one derivatives with broad substrate scope and good functional group tolerance in good to excellent yields.