Synthesis of topologically constrained naphthalimide appended palladium(ii)–N-heterocyclic carbene complexes – insights into additive controlled product selectivity
Literature Information
Pradeep Kumar Reddy Panyam, Ramdas Sreedharan, Thirumanavelan Gandhi
Topologically constrained naphthalimide appended Pd–NHCs were synthesized and characterized. These structurally related complexes were catalytically compared with previously synthesized Pd–NHCs in the regioselective heteroannulation of o-haloanilines and arylethynyl-trimethylsilane. The unique effect of an additive on product selectivity has been clearly demonstrated. The scope of the reaction with respect to different TMS protected alkynes and o-haloanilines is presented. Importantly, the step-economical regioselective synthesis of N-alkyl-3-aryl-indoles from o-haloanilines and arylethynyl-trimethylsilane assisted by Pd(II)–NHCs has been clearly demonstrated via one-pot heteroannulation, TMS deprotection and N-alkylation. In addition, synthetic utility was demonstrated with several derivatizations.
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Organic & Biomolecular Chemistry

Organic & Biomolecular Chemistry (OBC) publishes original and high impact research and reviews in organic chemistry. We welcome research that shows new or significantly improved protocols or methodologies in total synthesis, synthetic methodology or physical and theoretical organic chemistry as well as research that shows a significant advance in the organic chemistry or molecular design aspects of chemical biology, catalysis, supramolecular and macromolecular chemistry, theoretical chemistry, mechanism-oriented physical organic chemistry, medicinal chemistry or natural products. Articles published in the journal should report new work which makes a highly-significant impact in the field. Routine and incremental work is generally not suitable for publication in the journal. More details about key areas of our scope are below. In all cases authors should include in their article clear rationale for why their research has been carried out.













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