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Synthesis 1986; 1986(7): 569-570
DOI: 10.1055/s-1986-31708
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Increased para Selectivity in the Reimer-Tiemann Reaction by Use of Polyethylene Glycol as Complexing Agent

Ronny Neumann* , Yoel Sasson
  • *Casali Institute of Applied Chemistry, School of Applied Science and Technology, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
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Publication Date:
20 August 2002 (online)

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The para selectivity of the Reimer-Tiemann reaction was increased by use of polyethylene glycol in the reaction medium. The polyethylene glycol complexes the phenolate substrate masking the ortho position of the benzene nucleus increasing para selectivity without affecting the total yield.

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