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.
N-Heterocyclic Carbene Dichotomy in Pd-Catalyzed Acylation of Aryl Chlorides via C–H Bond Functionalization
作者:Areli Flores-Gaspar、Álvaro Gutiérrez-Bonet、Ruben Martin
DOI:10.1021/ol3023819
日期:2012.10.19
The first Pd-catalyzed intramolecular acylation of aryl chlorides via C-H bond functionalization is presented. The method allows for the synthesis of a variety of elusive benzocyclobutenones with a wide range of functional groups and substitution patterns. We demonstrate that a change in the ligand backbone dictates the selectivity pattern.
Pd-Catalyzed Intramolecular Acylation of Aryl Bromides via C−H Functionalization: A Highly Efficient Synthesis of Benzocyclobutenones
作者:Paula Álvarez-Bercedo、Areli Flores-Gaspar、Arkaitz Correa、Ruben Martin
DOI:10.1021/ja909811t
日期:2010.1.20
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.
Rhodium‐Catalyzed (4+1) Cycloaddition between Benzocyclobutenones and Styrene‐Type Alkenes
An unusual (4+1), instead of a normal (4+2), cycloaddition has been developed between benzocyclobutenones and styrene-type alkenes via the Rh-catalyzed C−C activation, which provides a distinct one-carbon ring expansion approach to access multi-substituted 2-indanones.