A variety of linear dienynes can deliver complex tetracyclicframeworks in the presence of an IrIII complex and visible light. Product formation involves the generation of four new C−C bonds and six contiguous stereocenters, which decorate two [3.1.0] bicyclic units tethered through their bridging quaternary carbon atoms. The internal alkyne acts as a formal dicarbenoid for the generation of two cyclopropanes
PdII-Catalyzed Highly Selective Arylation of Allyl Esters via CH Functionalization of Unreactive Arenes with Retention of the Traditional Leaving Group
作者:Delin Pan、Miao Yu、Wei Chen、Ning Jiao
DOI:10.1002/asia.200900558
日期:2010.5.3
A highlyselective Fujiwara–Moritani oxidative Heck reaction of allyl esters with unreactive arenes via CH bond activation was developed, in which β‐H elimination is highly chemo‐, regio‐ and stereoselective. Moreover, even electron‐deficient arenes are tolerated in this type of CH activation.
METHODS OF SYNTHESIZING CINACALCET AND SALTS THEREOF
申请人:Thiel Oliver
公开号:US20110281954A1
公开(公告)日:2011-11-17
Methods of preparing cinacalcet, cinacalcet derivatives, and salts thereof is disclosed herein. Also disclosed herein are polymorphs of cinacalcet, compositions of cinacalcet, and methods of treating a subject by administering cinacalcet, wherein cinacalcet is prepared by the disclosed methods.
Biphenyl aldehyde-based ternary catalytic system catalyzed Tsuji–Trost allylation of N-unprotected amino acid esters
作者:Zhao-Wei Wu、Wei Wen、Qi-Xiang Guo
DOI:10.1016/j.tet.2022.133235
日期:2023.2
the direct α-allylation reaction of N-unprotected amino acid esters and allyl alcohol acetates. The chemoselectivity of C-allylation and N-allylation is efficiently controlled and various racemic α,α-disubstituted amino acid esters are generated in good-to-high yields. The target products can be readily converted into structurally diverse α,α-disubstituted amino acids at a gram scale.