C(aryl)-O Bond Formation from Aryl Methanesulfonates via Consecutive Deprotection and SNAr Reactions with Aryl Halides in an Ionic Liquid
作者:Hui Xu、Yang Chen
DOI:10.3390/12040861
日期:——
(1-butyl-3-methylimidazolium tetrafluoroborate) as solvent has been developed. The procedure involves consecutive deprotection of aryl methane-sulfonates and a nucleophilic aromatic substitution (S(N)Ar) with activated aryl halides.
Arylmethanesulfonates are convenient latent phenols in the nucleophilic aromatic substitution reaction
作者:Christopher J. Dinsmore、C.Blair Zartman
DOI:10.1016/s0040-4039(99)00660-7
日期:1999.5
protecting group for a phenol is conveniently unmasked under the conditions of the SNAr reaction with an activated aryl halide, producing diarylether products directly. The method is advantageous when the preparation of a phenol substrate requires O-protection, since the selection of the robust methanesulfonate as a latent phenol obviates a deprotection step prior to the SNAr reaction.
苯酚的甲磺酰基保护基在S N Ar反应条件下与活化的芳基卤化物方便地被掩盖,直接生产二芳基醚产物。该方法是有利的,当一个酚基片的制备需要ø -防护,由于鲁棒甲磺酸盐作为潜苯酚消除脱保护之前,在S步骤的选择Ñ的Ar反应。
One-pot Microwave-assisted Tandem Deprotection of Arylmethanesulfonates / S<sub>N</sub>Ar Reaction for K<sub>2</sub>CO<sub>3</sub>-mediated C(Aryl)–O Bond Formation
作者:Hui Xu、Hong-Feng Li
DOI:10.1515/znb-2007-0912
日期:2007.9.1
One-pot microwave-assisted tandem deprotection of arylmethanesulfonates / nucleophilic aromatic substitution reaction (SNAr) with activated aryl halides to synthesize asymmetrical diaryl ethers is described.
A Novel Synthesis of Aryl Mesylates via One-Pot Demethylation-Mesylation of Aryl Methyl Ethers Using a Mixture of Phosphorus Pentoxide in Methanesulfonic Acid
作者:Babak Kaboudin、Yaghoub Abedi
DOI:10.1055/s-0029-1216790
日期:2009.6
for the synthesis of aryl mesylates viaone-pot demethylation-mesylation of aryl methyl ethers. Treatment of a variety of aryl methyl ethers with a mixture of phosphorus pentoxide in methanesulfonic acid as an efficient reagent proceeded effectively to afford the corresponding aryl mesylates in good yields. This method is easy, rapid, and good-yielding for the synthesis of aryl mesylates from aryl methyl
Coupling of Reformatsky Reagents with Aryl Chlorides Enabled by Ylide‐Functionalized Phosphine Ligands
作者:Zhiyong Hu、Xiao‐Jing Wei、Jens Handelmann、Ann‐Katrin Seitz、Ilja Rodstein、Viktoria H. Gessner、Lukas J. Gooßen
DOI:10.1002/anie.202016048
日期:2021.3.15
organozinc reagents with aryl electrophiles using a cyclohexyl‐YPhos ligand bearing an ortho‐tolyl‐substituent in the backbone. This highly electron‐rich, bulky ligand enables the use of arylchlorides in room temperature couplings of Reformatsky reagents. The reaction scope covers diversely functionalized arylacetic and arylpropionic acid derivatives. Aryl bromides and chlorides can be converted selectively