Copper-catalyzed intermolecular chloroazidation of α,β-unsaturated amides
作者:Long Chen、Haotian Xing、Huaibin Zhang、Zhong-Xing Jiang、Zhigang Yang
DOI:10.1039/c6ob01352j
日期:——
A highly practical copper-catalyzed intermolecular chloroazidation of α,β-unsaturated amides has been described, giving a series of azidochlorides in good-to-excellent yields. The stable azidoiodine(III) reagent and SOCl2 were used as azide and chlorine sources, respectively. The synthetic applications of this protocol were also explored by a variety of synthetically useful transformations.
Copper-Catalyzed Intermolecular Chloro- and Bromotrifluoromethylation of Alkenes
作者:Mingyang Fu、Long Chen、Yongpeng Jiang、Zhong-Xing Jiang、Zhigang Yang
DOI:10.1021/acs.orglett.5b03080
日期:2016.2.5
A highly practical copper-catalyzed intermolecular halotrifluoromethylation of alkenes has been developed under mild reaction conditions. A variety of Cl/Br-containing trifluoromethyl derivatives were directly synthesized from a wide range of alkenes, including electron-deficient and unactivated alkenes.
hydroformylation and hydroaminomethylation of α-substituted acrylamides is described using 1,3-phosphite-phosphoramidite ligands based on a sugar backbone. A broad scope of chiral aldehydes and amines were afforded in high yields and excellent enantioselectivities (up to 99%). Furthermore, the synthetic potential of this method is demonstrated by the single-step synthesis of the brain imaging molecule RWAY.