Benzyl methyl (S)-2-(p-tolylsulfinyl)maleate: an efficient dienophile for the enantioselective synthesis of cyclohexadienes
摘要:
The new dienophile, benzyl methyl (S)-2-(p-tolylsulfinyl)maleate, readily prepared in two steps from benzyl acetate, reacts with a wide variety of 1,3-dienes, under catalysis by TiC4, in a very regioselective and stereoselective manner to give optically pure (ee >96%) 1,3- and/or 1,4-cyclohexadienedicarboxylate esters in very high yields.
Benzyl methyl (S)-2-(p-tolylsulfinyl)maleate: an efficient dienophile for the enantioselective synthesis of cyclohexadienes
摘要:
The new dienophile, benzyl methyl (S)-2-(p-tolylsulfinyl)maleate, readily prepared in two steps from benzyl acetate, reacts with a wide variety of 1,3-dienes, under catalysis by TiC4, in a very regioselective and stereoselective manner to give optically pure (ee >96%) 1,3- and/or 1,4-cyclohexadienedicarboxylate esters in very high yields.