SYNTHESIS OF EXOCYCLIC ENAMIDES VIA STEREOCONTROLLED ALLYLIC ISOMERIZATION AND 1,3-TRANSPOSITION
摘要:
In the presence of pyridinium para-toluenesulfonate (PPTS) an allylic alcohol moiety exocyclic to a lactam ring undergoes allylic isomerisation, or if the solvent is nucleophilic, 1,3-transposition can occur. All the rearrangements occurred with stereocontrol.
SYNTHESIS OF EXOCYCLIC ENAMIDES VIA STEREOCONTROLLED ALLYLIC ISOMERIZATION AND 1,3-TRANSPOSITION
摘要:
In the presence of pyridinium para-toluenesulfonate (PPTS) an allylic alcohol moiety exocyclic to a lactam ring undergoes allylic isomerisation, or if the solvent is nucleophilic, 1,3-transposition can occur. All the rearrangements occurred with stereocontrol.