Pentafluorophenyl chlorothionoformate may be used:as derivatizing agent during radical-chain deoxygenations of primary alcoholsas a reagent during the conversion of ribonucleoside to arabinonucleosidesas reagent during the conversion of 6,8-diethyl-7-hydroxy-5-propyl-hexahydro-indolizin-3-one toO-6,8-diethyl-octahydro-3-oxo-5-propylindolizin-7-yl benzothioate
