Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 5-(di-tert-Butylphosphino)-1′,3′,5′-triphenyl-1’H-1,4′-bipyrazole, is researched, Molecular C32H35N4P, CAS is 894086-00-1, about Palladium Catalyzed C-O Coupling of Amino Alcohols for the Synthesis of Aryl Ethers.Safety of 5-(di-tert-Butylphosphino)-1′,3′,5′-triphenyl-1’H-1,4′-bipyrazole.
Amine containing aryl ethers are common pharmacophore motifs that continue to emerge from drug discovery efforts. As amino alcs. are readily available building blocks, practical methodologies for incorporating them into more complex structures are highly desirable. We report our efforts to explore the application of Pd-catalyzed C-O coupling methods to the arylation of 1,2- and 1,3-amino alcs. [e.g., 1-bromo-4-(trifluoromethyl)benzene + amino alc. I → II (82%, 68% isolated)]. We established general and reliable conditions, under which we explored the scope and limitations of the transformation. The insights gained have been valuable in employing this methodol. within a fast-moving drug discovery environment, which we anticipate will be of general interest to the synthesis and catalysis communities.
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