TEMPO/CuI synergetic catalyzed oxidative cross-coupling of indoles with benzylamines: Synthesis of bis(indolyl)phenylmethanes
摘要:
TEMPO/CuI was found to be an effective catalyst for the cross-coupling of indoles with benzylic amines affording the corresponding bis(indolyl)phenylmethanes under air atmosphere at room temperature in good to excellent yields. The efficiency, easy workup, simplicity, and chemoselectivity of this protocol provide a green and low-cost procedure for the synthesis of these compounds.[GRAPHICS].
An Unexpected C–C Bond Cleavage of Acetophenones: Synthesis of Bis(heteroaryl)arylmethanes and Triarylmethanes via SeO2/Lanthanide Chloride Catalyzed Friedel–Crafts Arylation
作者:H. Meshram、G. Kumar、A. Kumar、A. Swetha、B. Babu
DOI:10.1055/s-0035-1560808
日期:——
A novel synthesis of bisheteroarylaryl methanes and triarylmethanes is described by the selective C–C bond cleavage of acetophenones in the presence of SeO2/lanthanide chlorides. The present strategy provides an in situ generation of aldehydes from acetophenones followed by a double Friedel–Crafts reaction of electron-rich arenes. Natural product 1,1,1-tris(3-indolyl)methane is synthesized in a single