Base‐Mediated O‐Arylation of Alcohols and Phenols by Triarylsulfonium Triflates
作者:Xiao‐Xia Ming、Ze‐Yu Tian、Cheng‐Pan Zhang
DOI:10.1002/asia.201900968
日期:2019.10
A mild and efficient protocol for O-arylation of alcohols and phenols (ROH) by triarylsulfonium triflates was developed under transition-metal-free conditions. Various alcohols, including primary, secondary and tertiary, and phenols bearing either electron-donating or electron-withdrawing groups on the aryl rings were smoothly converted to form the corresponding aromatic ethers in moderate to excellent
Copper(II)-catalyzed O-Phenylation of Alcohols with Organobismuth(V) Reagents: A Convenient Method for the Synthesis of Simple<i>tert</i>-Alkyl Phenyl Ethers
A convenient method for copper(II)-catalyzed O-phenylation of simple alcohols with organobismuth(V) compounds under mild conditions is described. Treatment of tetraphenylbismuth fluoride (Ph 4 BiF) with various simple alcohols in the presence of a catalytic amount of Cu II acetate affords the corresponding phenyl ethers in good yields and the present reaction is successfully applied to the prepararion
描述了在温和条件下铜 (II) 催化的简单醇与有机铋 (V) 化合物的 O-苯基化的方便方法。在催化量的醋酸铜存在下,用各种简单醇处理四苯基氟化铋 (Ph 4 BiF) 以良好的收率得到相应的苯基醚,该反应成功地应用于各种叔烷基苯基醚的制备。
REACTION OF<i>exo</i>-2-NORBORNYL AND 1-ADAMANTYL<i>p</i>-TOLUENESULFONATES WITH SODIUM PHENOXIDE IN TETRAHYDROFURAN. IONIZATION OF THE SUBSTRATES UNDER “APPARENTLY-S<sub>N</sub>2” CONDITIONS
exo-2-Norbornyl and 1-adamantyl tosylates react with sodiumphenoxide in tetrahydrofuran via ionization, most probably through a cyclic transition state. The results call for attention in interpreting substitution reactions under “apparently-SN2” conditions.
The structure, photochemical reactivity, and photophysical properties of adamantyl X-substituted aryl ethers and a comparison with the alkyl groups, methyl, <i>tert</i>-butyl, and allyl
作者:A L Pincock、J A Pincock
DOI:10.1139/v05-117
日期:2005.9.1
The structure, photophysical properties, and photochemistry of the adamantyl aryl ethers 1 in both methanol and cyclohexane have been examined. UV absorption spectra, 13C NMR chemical shifts, X-ray structures, and Gaussian calculations (B3LYP/6-31G(d)) indicate that these ethers adopt a 90° conformer in the ground state. In contrast, fluorescence spectra, excited singlet state lifetimes, and calculations