Keteniminium‐Driven Umpolung Difunctionalization of Ynamides
作者:Shubham Dutta、Shengwen Yang、Rajeshwer Vanjari、Rajendra K. Mallick、Vincent Gandon、Akhila K. Sahoo
DOI:10.1002/anie.201915522
日期:2020.6.26
synthesis of novel triaryl‐substituted enamides is described. This transformation represents the first example of an umpolung regioselective unsymmetrical syn ‐1,2‐diarylation/aryl‐olefination of ynamides. The aryl moieties of the diazonium salt (electrophile) and boronic acid (nucleophile) are explicitly incorporated in the electrophilic α‐ and nucleophilic β‐position, respectively, of the ynamide
Three Component
<i>syn</i>
‐1,2‐Arylmethylation of Internal Alkynes**
作者:Shubham Dutta、Akhila K. Sahoo
DOI:10.1002/anie.202300610
日期:2023.3.13
A regio- and stereoselective Pd-catalyzed three-component syn-1,2-arylmethylation of internalalkynes is reported. A library of methyl containing tetra-substituted olefins was successfully built using readily available and bench-stable coupling partners, iodo-arenes, and methyl boronic acid.