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.
Sustainable, mild and efficient p-methoxybenzyl ether deprotections utilizing catalytic DDQ
作者:Katie Walsh、Helen F. Sneddon、Christopher J. Moody
DOI:10.1016/j.tet.2014.07.003
日期:2014.10
A procedure for the selective deprotection of p-methoxybenzyl ethersusingcatalyticamounts of DDQ and of sodium nitrite, with oxygen as the terminal oxidant, is reported.
Photocatalyst-Free, Visible-Light-Mediated C(sp<sup>3</sup>)–H Arylation of Amides via a Solvent-Caged EDA Complex
作者:Jaspreet Kaur、Ahmed Shahin、Joshua P. Barham
DOI:10.1021/acs.orglett.1c00132
日期:2021.3.19
A photocatalyst-free and mild visible light photochemical procedure for C(sp3)–H arylation of amides is described. The reaction proceeds via an electrondonor–acceptor (EDA) complex between an electron-rich arene substrate and electron-poor persulfate oxidant. C(sp3)–H arylation of the amide occurs selectively with the most electron-rich arene of the substrate. Mechanistic studies corroborate the reaction
Conversion of substituted benzyl ethers to diarylmethanes. A direct synthesis of diarylbenzofurans
作者:George A. Kraus、Divya Chaudhary
DOI:10.1016/j.tetlet.2012.10.058
日期:2012.12
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.