• Bulletin of the Korean Chemical Society
• /
• 제33권5호
• /
• pp.1781-1784
• /
• 2012

• Bulletin of the Korean Chemical Society
• /
• 제32권spc8호
• /
• pp.2911-2915
• /
• 2011

Efficient synthetic method for the preparation of ethyl 2-aryl-2,3-alkadienoates through Pd-catalyzed selective allenyl cross-coupling reactions of aryl iodides with organoindiums generated in situ from indium and ethyl 4-bromo-2-alkynoate was developed. The cyclization reaction of ethyl 2-aryl-2,3-alkadienoates catalyzed by $AuCl_3$ and AgOTf in the presence of AcOH or TfOH produced various ${\alpha}$-aryl ${\gamma}$-butenolides or ${\gamma}$-substituted ${\alpha}$-aryl ${\gamma}$-butenolides.