Enantioselective Access to Cyclopentanone-Fused Dihydrothiophenes
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We achieve the Rh/(R,R)-Me-ferrocelane-catalyzed skeletal transformation of 1,2,3-thiadiazoles with cyclopent-2-en-1-ones and regio- and diastereospecifically construct highly enantiopure cyclopentanone-fused dihydrothiophenes that are otherwise difficult to p... ...