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 palladium complexes catalyzed intramolecular 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.
钯配合物催化的酰胺基炔烃的分子内加氢酰胺化反应以高至高收率得到相应的内酰胺。例如,在10mol%的Pd(PPh 3)4和20mol%的PhCOOH的存在下,酰胺炔3a在1,4-二恶烷中的反应在100℃下顺利进行,得到相应的内酰胺4a,在92 ℃ 。 % 屈服。