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Gibbilimbols B and D were synthesized from the facile rearrangement of sulfone in the presence of dibromodifluoromethane and alumina-supported KOH in dichloromethane,followed by refluxing the rearrangement products in conc.HCl and methanol and then treating with thiophenol in the presence of AIBN.
Gibbilimbols B and D were synthesized from the facile rearrangement of sulfone in the presence of dibromodifluoromethane and alumina-supported KOH in dichloromethane, followed by refluxing the rearrangement products in conc. HCl and methanol and then treating with thiophenol in the presence of AIBN.