31039-82-4Relevant academic research and scientific papers
A new biarylphosphine ligand for the Pd-catalyzed synthesis of diaryl ethers under mild conditions
Salvi, Luca,Davis, Nicole R.,Ali, Siraj Z.,Buchwald, Stephen L.
supporting information; experimental part, p. 170 - 173 (2012/03/08)
A new bulky biarylphosphine ligand (L8) has been developed that allows the Pd-catalyzed C-O cross-coupling of a wide range of aryl halides and phenols under milder conditions than previously possible. A direct correlation between the size of the ligand substituents in the 2′, 4′, and 6′ positions of the nonphosphine containing ring and the reactivity of the derived catalyst system was observed. Specifically, the rate of coupling increased with the size of these substituents.
Super-electron donors: Bis-pyridinylidene formation by base treatment of pyridinium salts
Murphy, John A.,Gamier, Jean,Park, Stuart R.,Schoenebeck, Franziska,Zhou, Sheng-Ze,Turner, Andrew T.
supporting information; experimental part, p. 1227 - 1230 (2009/04/06)
Deprotonation of bispyridinium salt 7b affords bispyridinylidene 10, a very powerful neutral organic two-electron donor [E1/2 (DMF) = -1.13 V vs Ag/AgCI/KCI (sat)], presumably via the pyridinylidene 8. Donor 10 reduces aryl iodides and bromides to aryl anions in excellent yield and also reductively cleaves selected phenylalkylsulfones very efficiently.
