Pd-Catalyzed Intramolecular Acylation of Aryl Bromides via C−H Functionalization: A Highly Efficient Synthesis of Benzocyclobutenones
摘要:
A new catalyst system for the intramolecular acylation of aldehydes with aryl bromides via C-H functionalization is described. The transformation is distinguished by a remarkable functional group tolerance and hence allows for the synthesis of a wide variety of highly functionalized benzocyclobutenones with a diverse set of substitution patterns from simple and easily accessible precursors.
Pd-Catalyzed Intramolecular Acylation of Aryl Bromides via C−H Functionalization: A Highly Efficient Synthesis of Benzocyclobutenones
摘要:
A new catalyst system for the intramolecular acylation of aldehydes with aryl bromides via C-H functionalization is described. The transformation is distinguished by a remarkable functional group tolerance and hence allows for the synthesis of a wide variety of highly functionalized benzocyclobutenones with a diverse set of substitution patterns from simple and easily accessible precursors.
Palladium-Catalyzed Access to Benzocyclobutenone-Derived Ketonitrones via C(sp<sup>2</sup>)–H Functionalization
作者:Jakub Brześkiewicz、Rafał Loska
DOI:10.1021/acs.orglett.2c01317
日期:2022.6.10
The palladium-catalyzedC(sp2)–H functionalization of bromoaryl aldonitrones leading to benzocyclobutenone-derived ketonitrones is described. This method allows for the preparation of a wide range of strained, four-membered ketonitrones with broad functional group tolerance. Downstream transformations of the formed products were readily demonstrated, illustrating the synthetic utility of the obtained