Ir-catalysed formation of C−F bonds. From allylic alcohols to α-fluoroketones
作者:Nanna Ahlsten、Belén Martín-Matute
DOI:10.1039/c1cc12653a
日期:——
A novel iridium-catalysed tandem isomerisation/CâF bond formation from allylic alcohols and Selectfluor® to prepare α-fluorinated ketones as single constitutional isomers is reported.
Cooperative Catalysis by Palladium and a Chiral Phosphoric Acid: Enantioselective Amination of Racemic Allylic Alcohols
作者:Debasis Banerjee、Kathrin Junge、Matthias Beller
DOI:10.1002/anie.201405511
日期:2014.11.24
Cooperativecatalysis by [Pd(dba)2] and the chiralphosphoricacid BA1 in combination with the phosphoramidite ligand L8 enabled the efficient enantioselectiveamination of racemicallylicalcohols with a variety of functionalized amines. This catalytic protocol is highly regio‐ and stereoselective (up to e.r. 96:4) and furnishes valuable chiral amines in almost quantitative yield.
that selectively iodinates electron-rich aromatics. In contrast to other common electrophilic iodinating reagents, its mild nature allows it to be used for the selective synthesis of α-iodinated carbonyl compounds fromallylicalcohols through a 1,3-hydrogen shift / iodination process catalyzed by iridium(III) complexes.
An efficient method for the synthesis of α‐iodoketones fromallylicalcohols and elemental iodine is reported. We show in this paper that the isomerization of allylicalcohols catalyzed by iridium(III) complexes can be combined with an aerobic oxidative iodination protocol, resulting in a straightforward method for the synthesis of a wide range of α‐iodoketones as single constitutional isomers and