Synthesis 2022; 54(02): 393-402
DOI: 10.1055/a-1589-7548
paper

A Domino Heck Coupling–Cyclization–Dehydrogenative Strategy for the One-Pot Synthesis of Quinolines

Santanu Ghora
,
,

We are grateful to the Department of Science and Technology, Science and Engineering Research Board (DST-SERB), New Delhi (Grant No. EMR/2017/005312) for financial support. C.B.S. thanks the University Grants Commission (UGC), India, for the award of a research fellowship.


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Abstract

An efficient, one-pot, domino synthesis of quinolines via the coupling of iodoanilines with allylic alcohols facilitated by palladium catalysis is described. The overall synthetic process involves an intermolecular Heck coupling between 2-iodoanilines and allylic alcohols, intramolecular condensation of in situ generated ketones with an internal amine functional group, and a dehydrogenation sequence. Notably, this protocol occurs in water as a green solvent. Significantly, the method exhibits broad substrate scope and is applied for the synthesis of deuterated quinolines through a deuterium-exchange process.

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Publikationsverlauf

Eingereicht: 12. Juli 2021

Angenommen nach Revision: 17. August 2021

Accepted Manuscript online:
17. August 2021

Artikel online veröffentlicht:
13. Oktober 2021

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