Ir‐phosphinomethyl‐oxazoline complexes have been identified as efficient, highlyenantioselective catalysts for the asymmetric hydrogenation of 3,3‐disubstituted allylicalcohols and related homoallylic alcohols. In contrast to other N,Pligand complexes, which require weakly coordinating solvents, such as dichloromethane, these catalysts perform well in more ecofriendly THF or 2‐MeTHF. Their synthetic
We have developed a nickel-catalyzedcross-coupling reaction of cyclic alkenyl ethers with arylboronic esters that leads to the formation of unsaturated alcohols via ring-opening by the cleavage of a C(sp2)–O bond. The use of 1,3-dicyclohexylimidazol-2-ylidene as the ligand is essential to promote this cross-coupling process.
Enantioselective fluorination of homoallylic alcohols enabled by the tuning of non-covalent interactions
作者:Jaime A. S. Coelho、Akira Matsumoto、Manuel Orlandi、Margaret J. Hilton、Matthew S. Sigman、F. Dean Toste
DOI:10.1039/c8sc02223b
日期:——
The study of the enantioselective fluorination of homoallylicalcohols via chiral anion phase transfer (CAPT) catalysis using an in situ generated directing group is described. Multivariate correlation analysis, including designer π-interaction derived parameters, revealed key structural features affecting the selectivity at the transition state (TS). Interpretation of the parameters found in the model