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Palladium-catalyzed dearomative 1, 4-hydroamination
Gilbert, Robert ; Davis, Christopher W ; Bingham, Tanner W , et al. Tetrahedron,2024,134135. DOI: 10.1016/j.tet.2024.134135
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Abstract: A dearomative 1,4-hydroamination of nonactivated arenes has been developed, using a key arene-arenophile photocycloaddition strategy to disrupt aromaticity. Palladium catalysis with K-Selectride? as a hydride source uniquely enables selective reactivity and provides access to a range of substituted 1,4-cyclohexadienes from aromatic starting materials. We demonstrate a few synthetic applications of this scalable procedure by preparing highly-functionalized small molecules in three to four steps from naphthalene.
Keywords: Dearomatization ; Hydroamination ; Arenophiles ; Palladium ; Catalysis
Purchased from AmBeed: 32005-36-0 ; 657408-07-6 ; 787618-22-8 ; 213697-53-1 ; 12150-46-8
CAS No. : | 12150-46-8 | MDL No. : | MFCD00001422 |
Formula : | C34H28FeP2 | Boiling Point : | No data available |
Linear Structure Formula : | [((P(C6H5)2C5H4)2Fe)] | InChI Key : | - |
M.W : | 554.38 | Pubchem ID : | - |
Synonyms : |
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Signal Word: | Danger | Class: | 6.1 |
Precautionary Statements: | P261-P264-P270-P271-P280-P301+P310-P302+P352-P304+P340-P312-P330-P363-P405-P501 | UN#: | 3467 |
Hazard Statements: | H301 | Packing Group: | Ⅲ |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In acetonitrile; for 4h;Heating / reflux; | Palladium diammine dichloride and 1 mole equivalent of 1 ,2bis(diphenylphosphino)ferrocene (dppf) were suspended in acetonitrile at reflux for 4 hrs. A basic gas (believed to be ammonia) was evolved during the reaction. The product was filtered off at room temperature and dried. The product contained 7.29percent Fe and 14.44percent Pd by standard wet chemical analysis and was identified as Pd(dppf)CI2 by infra-red spectroscopy. |