Cárdenas J, Gaviño R, García-Ríos E, Rios-Ruiz L, Puello-Cruz AC, Morales-Serna FN, Gómez S, López-Torres A, Morales-Serna JA. The Heck reaction of allylic alcohols catalysed by an N-heterocyclic carbene-Pd(
ii) complex and toxicity of the ligand precursor for the marine benthic copepod
Amphiascoides atopus.
RSC Adv 2021;
11:20278-20284. [PMID:
35479906 PMCID:
PMC9033956 DOI:
10.1039/d1ra03484g]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 05/31/2021] [Indexed: 11/21/2022] Open
Abstract
The palladium-catalysed reaction of aryl halides and allylic alcohols is an attractive method for obtaining α,β-unsaturated aldehydes and ketones, which represent key intermediates in organic synthesis. In this context, a 1,2,3-triazol-5-ylidene (aNHC)-based palladium(ii) complex formed in situ has been found to be a selective catalyst for the syntheses of building blocks from the corresponding aryl halides and allylic alcohols, with yields ranging from 50% to 90%. The lack of toxic effects of the ligand precursor (1,2,3-triazolium salt) of the palladium(ii) complex for the harpacticoid copepod Amphiascoides atopus allowed us to contrast the efficiency of the catalytic system with the potential impact of the principal waste chemical in global aquatic ecosystems, which has not been previously addressed.
A 1,2,3-triazol-5-ylidene (aNHC)-based palladium(ii) complex formed in situ has been found to be an efficient catalyst in the formation of C–C bonds.![]()
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