Conversion of substituted benzyl ethers to diarylmethanes. A direct synthesis of diarylbenzofurans
摘要:
The Lewis acid catalyzed rearrangement of substituted benzyl ethers affords diarylmethanes in good yields. One of the products was converted into a diarylbenzofuran using a benzoylation/P4-tBu cyclization protocol. (C) 2012 Elsevier Ltd. All rights reserved.
Friedel-Crafts alkylation oxidative cyclization catalyzed by co-oxidation of SeO<sub>2</sub> and FeCl<sub>3</sub>: a simple synthesis of benzo[<i>b</i>]furan from acetophenone and anisole
Abstract A simple one-pot method was developed to complete the α-diphenyl substitution and cyclization of acetophenone using acetophenone and substituted benzene as substrates, and a series of benzofuran derivatives was synthesized efficiently. It had the advantages of medium to excellent yield and easily obtained substrate. Compared with other methods, the method avoids the use of precious metals