Prostanoids: LXXXVII. Synthesis of 3-Hydroxy-2-phenylsulfonyl-2-cyclopentenone and Its Ethylene Acetal
摘要:
By oxidation of 3-phenylmercapto-2-chloro-4,4-ethylenedioxycyclopet-2-en-1-one with H2O2 in AcOH (or with m-ClC6H4CO3H in CH2Cl2) was obtained 2-chloro-3-phenylsulfonyl-4,4-ethylenedioxycyclopent-2-en-1-one which on reduction with NaBH4 or LiAlH4 afforded respectively 3-hydroxy-2-phenyl-sulfonylcyclopent-2-en-1-one and its ethyleneketal.
Prostanoids: LXXXVI. Synthesis and Reductive Transformations of 2-Chloro-4,4-ethylenedioxy-3-phenylsulfanyl-2-cyclopentenone
摘要:
The reduction of 2-chloro-4,4-ethylenedioxy-3-phenylsulfanyl-2-cyclopentenone with sodium tetrahydridoborate in ethanol yields 3-chloro-4-hydroxy-2-phenyisulfanyl-2-cyclopentenone, while with the use of lithium aluminum hydride in tetrahydrofuran or the system Zn/NH4Cl in methanol products of more profound reduction are obtained.