Lactam Synthesis via the Intramolecular Hydroamidation of Alkynes Catalyzed by Palladium Complexes
作者:Nitin T. Patil、Zhibao Huo、Gan B. Bajracharya、Yoshinori Yamamoto
DOI:10.1021/jo060142x
日期:2006.4.1
The palladiumcomplexescatalyzedintramolecular hydroamidation reaction of amidoalkynes gives the corresponding lactams in good to high yields. For example, in the presence of 10 mol % of Pd(PPh3)4 and 20 mol % of PhCOOH, the reaction of the amidoalkyne 3a in 1,4-dioxane at 100 °C proceeded smoothly to give the corresponding lactam 4a in 92% yield.