Silver-Catalyzed Direct C${{_{sp{^{2}}}}}$H Phosphorylation of Indoles Leading to Phosphoindoles
作者:Wang-Bin Sun、Jian-Fei Xue、Guo-Yu Zhang、Run-Sheng Zeng、Li-Tao An、Pei-Zhi Zhang、Jian-Ping Zou
DOI:10.1002/adsc.201600001
日期:2016.6.2
The silver carbonate‐catalyzed direct CH phosphorylation of indoles in the presence of magnesium nitrate is described. The reaction affords selectively phosphonoindoles in moderate to good yields through a radical process. This protocol provides an efficient and general method for the preparation of 2‐ and 3‐phosphorylated indoles.
The reactions of N‐sulfonylindoles with H‐phosphine oxides under oxidative conditions give a wide range of C‐3 phosphorylated free (NH)‐indoles. Several mild oxidants, such as AgNO3, di‐tert‐butyl peroxide (DTBP), and K2S2O8, can be used to promote this transformation.
在氧化条件下,N-磺酰吲哚与H-氧化膦的反应产生了多种C-3磷酸化的游离(NH)-吲哚。可以使用几种弱氧化剂,例如AgNO 3,过氧化二叔丁基(DTBP)和K 2 S 2 O 8来促进这种转化。
A unique copper-catalyzed cross-coupling reaction by hydrogen (H<sub>2</sub>) removal for the stereoselective synthesis of 3-phosphoindoles
作者:An-Xi Zhou、Liu-Liang Mao、Gang-Wei Wang、Shang-Dong Yang
DOI:10.1039/c4cc01815j
日期:——
The first Cu(i)-catalyzed cross-couplingreaction by hydrogen (H2) removal for the stereoselectivesynthesis of 3-phosphoindoles is reported. Going beyond the oxidative dehydrogenative coupling reactions reported recently, this reaction completely omits the oxidant and base, producing hydrogen (H2) as the only byproduct.