Phenol → 2'-(2-Phenoxy-ethylsulfanylmethyl)-biphenyl-2-carboxylic acid ethyl ester

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Reaction Steps

2′-(2-Phenoxy-ethylsulfanylmethyl)-biphenyl-2-carboxylic acid ethyl ester was synthesized as described for 4′-(2-phenoxy-ethylsulfanylmethyl)-biphenyl-3-carboxylic acid ethyl ester. 2′-(2-Hydroxy-ethylsulfanylmethyl)-biphenyl-2-carboxylic acid ethyl ester (5.0 g, 15.80 mmol, 1 eq.) in anhydrous THF was treated with phenol (2.08 g, 22.12 mmol, 1.4 eq.), triphenylphosphine (5.80 g, 22.12 mmol, 1.4 eq.), and diisopropyl azidocarboxylate (4.47 g, 22.12 mmol, 1.4 eq.). When complete, the reaction was worked up as described leaving an orange oil.

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