Gold( i )-catalyzed diastereoselective synthesis of 1-α-oxybenzyl-1 H -indenes

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Abstract
The gold(I)-catalyzed oxycyclization of β-aryl monosubstituted o-(alkynyl)styrenes gives rise to 1-α-methoxy or 1-α-hydroxybenzyl-1H-indenes in a diastereospecific way. In contrast to β,β-disubstituted o-(alkynyl)styrenes, the stereochemical outcome of this process, diastereospecific reaction supports the higher contribution of a gold intermediate with a cyclopropylcarbene-like character.
Funding Information
  • Consejería de Educación, Junta de Castilla y León (BU076U16)
  • Secretaría de Estado de Investigación, Desarrollo e Innovación (CTQ2016-75023-C2-1-P)

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