C-3 alkylation of oxindole with alcohols by Pt/CeO<sub>2</sub> catalyst in additive-free conditions
作者:Chandan Chaudhari、S. M. A. Hakim Siddiki、Kenichi Kon、Atsuko Tomita、Yutaka Tai、Ken-ichi Shimizu
DOI:10.1039/c3cy00911d
日期:——
In a series of transition metal-loaded CeO2 catalysts and Pt-loaded catalysts on various supports, Pt-loaded CeO2 shows the highest activity for the selectiveC-3alkylation of oxindole with octanol. The catalyst is effective for alkylation of oxindole and N-substituted oxindole with a series of substituted benzyl, linear, hetero-aryl alcohols under additive-free conditions and is recyclable. Our results
Iron‐Catalyzed Borrowing Hydrogen
<i>C</i>
‐Alkylation of Oxindoles with Alcohols
作者:Mubarak B. Dambatta、Kurt Polidano、Alexander D. Northey、Jonathan M. J. Williams、Louis C. Morrill
DOI:10.1002/cssc.201900799
日期:——
general and efficient iron‐catalyzed C‐alkylation of oxindoles has been developed. This borrowing hydrogen approach employing a (cyclopentadienone)iron carbonyl complex (2 mol %) exhibited a broad reaction scope, allowing benzylic and simple primary and secondary aliphatic alcohols to be employed as alkylating agents. A variety of oxindoles underwent selective mono‐C3‐alkylation in good‐to‐excellent
Nickel Catalyzed Alkylation of Oxindoles with Alkyl Alcohols
作者:Adrija Ghosh、Atanu Bera、Debasis Banerjee
DOI:10.1002/cctc.202201433
日期:2023.2.20
Alkylation with alcohols: Herein, nickel-catalyzed hydrogen borrowing strategy was employed for alkylation of 2-oxindoles using alkyl alcohols. Initial mechanisticstudies, deuterium labelling experiments and late stage synthetic modulation of the alkylated products were performed.