Organocatalytic enantioselective hydrophosphonylation of aldehydes
作者:Juan V. Alegre-Requena、Eugenia Marqués-López、Pablo J. Sanz Miguel、Raquel P. Herrera
DOI:10.1039/c3ob42403k
日期:——
our results concerning the first squaramide-catalysed hydrophosphonylation of aldehydes. In all cases, the reactions proceeded smoothly and cleanly under mild reaction conditions rendering final α-hydroxy phosphonates in very good yields and high enantioselectivities. It is one of the few organocatalytic examples of this reaction using aldehydes. It is the first time that diphenylphosphite (1e) has
作者:Ascaso-Alegre, Christian、Herrera, Raquel P.、Mangas-Sánchez, Juan
DOI:10.1002/cctc.202400817
日期:——
complex molecular structures with high stereocontrol. This study demonstrates a sequential process involving enzymatic aerobic oxidation followed by squaramide-mediated asymmetric formation of C−P and C−Cbonds to make important chiral synthons in good yields and enantiomeric ratios under mild reaction conditions. This process operates within a biphasic system and represents a pioneering example of a
A novel Ni–PyBisulidine complex has been developed for the asymmetric hydrophosphonylation of aldehydes. A variety of aromatic, heteroaromatic, condensed-ring, α,β-unsaturated, and aliphatic aldehydes are found to be suitable substrates for the reaction, and the desired α-hydroxy phosphonates are obtained in up to 99% yield and 97% ee.