Novel and highly efficient one pot protocol for the synthesis of diversely functionalized triarylmethanes
作者:B. Madhu Babu、Pramod B. Thakur、Vikas M. Bangade、H.M. Meshram
DOI:10.1016/j.tetlet.2014.11.139
日期:2015.2
efficient, convenient, and novel one pot approach is described for the synthesis of triarylmethanes by in situ oxidation of benzylalcohols followed by the Friedel–Crafts alkylation of di/trimethoxybenzenes in the presence of BF3·OEt2. The generality of the present method is strengthened by screening a variety of aromatic, aliphatic, and heteroaromatic alcohols with methoxy arenes. Shorter reaction time
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