Asymmetric Hydroarylation of Enones via Nickel-Catalyzed 5-<i>Endo-Trig</i> Cyclization
作者:Xurong Qin、Marcus Wen Yao Lee、Jianrong Steve Zhou
DOI:10.1021/acs.orglett.9b02130
日期:2019.8.2
A nickel-catalyzed reductivecyclization of enones affords a wide array of indanones in high enantiomeric induction. The reaction is featured with an unprecedented broad scope of substrates. The versatility of the new method is demonstrated in several short stereoselective syntheses of medically valuable (R)-tolterodine, parent and deuterated (+)-indatraline, and an antitumor natural product, (+)-multisianthol
Stereoselective construction of novel biaryl bridged seven-membered ring scaffolds via intramolecular [3 + 2] cycloaddition reactions
作者:Hafiza Marium Butt、Shiqiang Wei、Yue Wang、Jingping Qu、Baomin Wang
DOI:10.1016/j.tetlet.2021.153510
日期:2021.12
A novel approach to biaryl bridged seven-membered carbocyclic scaffolds was developed by means of an intramolecular [3 + 2] cycloaddition process of in situ formed azomethine ylides from 2-cinnamoyl-2'-formyl biphenyl and diethyl aminomalonate hydrochloride. A range of biaryl bridged carbocyclic motifs with five-membered pyrrole ring bearing three steregenic centers was achieved with good to excellent