Dichloromethane → 4-Methyl-2'-(2-oxo-3-trityl-1,3,4-oxadiazol-5-yl)biphenyl

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Reaction Steps

2.03 g of the compound prepared in step B, 2.5 g of trityl chloride, 50 ml of DCM and 1.6 ml of triethylamine are placed in a round-bottomed flask and the mixture is refluxed for 1 and a half hours. It is evaporated, the residue is taken up with an ethyl ether/water mixture and the organic phase is washed with a 3% solution of potassium hydrogensulfate, dried over sodium sulfate, filtered and evaporated. The product is used in the crude form for the next step.

Provenance & Evidence