Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 29, Issue 2, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202202956
Keywords
arylindanones; benzylic arylation; Bronsted acid catalysis; cascade reactions; diaryl esters
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A three-component, solvent-dependent, Bronsted-acid-catalyzed reaction has been developed for the synthesis of potential drug candidate 3-aryl-1-indanones. This reaction features high regioselectivity, broad substrate generality, easy scalability, and diverse starting materials. Detailed mechanistic insight leads to a feasible reaction pathway.
A three-component, solvent-dependent, Bronsted-acid-catalyzed reaction of benzaldehydes, silyl enolates and arene nucleophiles has been developed for the synthesis of potential drug candidate 3-aryl-1-indanones. This reaction features the formation of three C-C bonds, high regioselectivity in a one-pot strategy, broad substrate generality, facile scalability (1.04g), high functional group tolerance and viable substrates. The beta-O-silyl ethers generated in-situ from the Mukaiyama aldol reaction were subjected to acid-catalyzed benzylic arylation with strong as well as weak nucleophiles, and the resultant beta,beta-diaryl esters can undergo a third C-C bond formation with excellent regioselectivity through intramolecular cyclization to afford the indanone products in the same pot. Detailed mechanistic insight leads to a feasible reaction pathway. This transformation opens up a practical and adaptable approach to producing a variety of synthetically valuable transformations and enable the synthesis of medicinally valuable (R)-tolterodine and (+)-indatraline.
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