Rhodium catalyzed template-assisted distal para-C–H olefination
نویسندگان
چکیده
منابع مشابه
Rhodium(iii)-catalyzed ortho-olefination of aryl phosphonates.
Rhodium(iii)-catalyzed C-H olefination of aryl phosphonic esters is reported for the first time. In this mild and efficient process, the phosphonic ester group is utilized successfully as a new directing group. In addition, mono-olefination for aryl phosphonates is observed using a phosphonic diamide directing group.
متن کاملRhodium(III)-catalyzed oxidative olefination of N-allyl sulfonamides.
Rhodium(III)-catalyzed oxidative couplings between N-sulfonyl allylamines and activated olefins have been achieved. Only olefination occurred for acrylates, and the butadiene product can be further cyclized under palladium-catalyzed aerobic conditions. The coupling with N,N-dimethylacrylamide followed a cyclization pathway.
متن کاملRhodium(III)-catalyzed oxidative mono- and di-olefination of isonicotinamides.
[RhCp*Cl(2)](2) can catalyze the oxidative coupling of secondary isonicotinamides with activated olefins using Cu(OAc)(2) as an oxidant. The selectivity can be controlled by the solvent. In MeCN, the mono-olefination and two-fold oxidation reaction is the major pathway, while in THF this reaction gave mostly diolefination products. In both cases, the coupled products contain an exocyclic C=C bond.
متن کاملMyoglobin-Catalyzed Olefination of Aldehydes.
The olefination of aldehydes constitutes a most valuable and widely adopted strategy for constructing carbon-carbon double bonds in organic chemistry. While various synthetic methods have been made available for this purpose, no biocatalysts are known to mediate this transformation. Reported herein is that engineered myoglobin variants can catalyze the olefination of aldehydes in the presence o...
متن کاملRhodium-catalyzed olefination of aryl tetrazoles via direct C-H bond activation.
Rh(III)-catalyzed direct olefination reaction via aromatic C-H bond activation is described using tetrazole as the directing group. This reaction provides a straightforward way for the synthesis of ortho-alkenyl aryl tetrazoles. Various functional groups tolerate the reaction conditions and afford the corresponding products in moderate to excellent yields.
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ژورنال
عنوان ژورنال: Chemical Science
سال: 2019
ISSN: 2041-6520,2041-6539
DOI: 10.1039/c9sc01824g