Activation of Alcohols with Carbon Dioxide: Intermolecular Allylation of Weakly Acidic Pronucleophiles
作者:Simon B. Lang、Theresa M. Locascio、Jon A. Tunge
DOI:10.1021/ol502023d
日期:2014.8.15
coupling of allyl alcohols with nitroalkanes, nitriles, and aldehydes using catalytic Pd(PPh3)4 has been accomplished viaactivation of C–OH bonds with CO2. The in situ formation of carbonates from alcohols and CO2 facilitates oxidativeaddition to Pd to form reactive π-allylpalladium intermediates. In addition, the formation of a strong baseactivates nucleophiles toward the reaction with the π-allylpalladium
Palladium/Brønsted Acid-Catalyzed α-Allylation of Aldehydes with Allylic Alcohols
作者:Gaoxi Jiang、Benjamin List
DOI:10.1002/adsc.201100260
日期:2011.7
A simple, highly efficient, and readily scalable direct α‐allylation of aldehydes with allylic alcohols that is co‐catalyzed by palladium and a Brønsted acid has been developed.
Rhodium-Catalyzed Tandem Isomerization–Allylation: From Diallyl Carbonates to α-Quaternary Aldehydes
作者:Jeanne Masson-Makdissi、Young Jin Jang、Liher Prieto、Mark S. Taylor、Mark Lautens
DOI:10.1021/acscatal.9b04128
日期:2019.12.6
isomerization–allylation sequence for the generation of α-quaternary aldehydes, starting from unsymmetrical diallyl carbonates. This reaction features a highly selective oxidative addition of the rhodium catalyst, leading to the discrimination of electrophilic and nucleophilic elements of various diallyl carbonates. A rhodium-enolate and an allyl electrophile are produced catalytically in situ in a controlled fashion