A new mild procedure for the direct coupling of 1-trimethylsilyl acetylenes with vinyl triflates or aryl iodide
摘要:
1-Trimethylsilyl acetylenes can be directly coupled with vinyl triflates or aryl iodide in the presence of the appropriate amount of potassium carbonate and methanol and a catalytic amount of AgCl and Pd(PPh3)(4). Functionalized enynes can thus be obtained in good to excellent yields without prior deprotection of the alkyne. (C) 2002 Elsevier Science Ltd. All rights reserved.