A range of medium-sized cyclic ethers (5 to 11 membered) have been effectively synthesized through intramolecular reductive coupling of dialdehydes initiated by 50 ppm to 0.5% of AgNTf2 with hydrosilane at 25 °C. The catalytic system is also suitable for the coupling of two different monoaldehydes to provide unsymmetrical ethers. This protocol features broad functional group compatibility, high product
Cross-Coupling of Mesylated Phenol Derivatives with Potassium Alkoxymethyltrifluoroborates
作者:Gary A. Molander、Floriane Beaumard
DOI:10.1021/ol201469r
日期:2011.8.5
Cross-coupling of mesylated phenol derivatives with various potassium alkoxymethyltrifluoroborates has been achieved. The corresponding aryl and heteroaryl alkoxymethyl compounds have been obtained with equal facility with both electron-rich and electron-poor substituents on the activated alcohol.
791. The relative stabilising influences of substituents on free alkyl radicals. Part III. The cleavage of monosubstituted dibenzyl ethers by Grignard reagents in the presence of cobaltous chloride
作者:R. L. Huang、Sing Sow Si-Hoe
DOI:10.1039/jr9570003988
日期:——
Photocatalytic Dehydroxymethylative Arylation by Synergistic Cerium and Nickel Catalysis
作者:Yuegang Chen、Xin Wang、Xu He、Qing An、Zhiwei Zuo
DOI:10.1021/jacs.1c00618
日期:2021.4.7
broad range of free alcohols and aromatichalides can be facilely employed in this transformation, representing a new paradigm for the C(sp3)–C(sp2) bond construction between free alcohols and aryl halides with the extrusion of formaldehyde. Moreover, mechanistic investigations have been conducted, leading to the identification of a tribenzoate cerium(III) complex as a viable intermediate.