Synthesis of Aromatic Ethers Without Organic Solvent and Inorganic Carrier under Microwave Irradiation
作者:Jin-Xian Wang、Manli Zhang、Zhiliang Xing、Yulai Hu
DOI:10.1080/00397919608003618
日期:1996.1
Abstract A simple, repid and efficient procedure for the synthesis of aromatic ethers via microwaveirradiationwithout any organic solvent and inorganic carrier is reported.
摘要 报道了一种无需任何有机溶剂和无机载体的微波辐射合成芳香醚的简单、快速、高效的方法。
Palladium-Catalyzed Substitution and Cross-Coupling of Benzylic Fluorides
作者:George Blessley、Patrick Holden、Matthew Walker、John M. Brown、Véronique Gouverneur
DOI:10.1021/ol300977f
日期:2012.6.1
Benzylic fluorides are suitable substrates for Pd(0)-catalyzed Tsuji–Trost substitution using carbon, nitrogen, oxygen, and sulfur nucleophiles and for cross-coupling with phenylboronic acid. For the bifunctionalsubstrate 4-chlorobenzyl fluoride, fine-tuning of the reaction conditions allows for the regioselective displacement of either the chlorine or fluorine substituent. The leaving group ability
苯甲酸氟化物是使用碳,氮,氧和硫亲核试剂进行Pd(0)催化的Tsuji-Trost取代以及与苯基硼酸交叉偶联的合适底物。对于双官能底物4-氯苄基氟化物,反应条件的微调允许氯或氟取代基的区域选择性置换。的氟化物VS在替代移位其它基团的离去基团的能力是CF 3 CO 2 ≈ p -NO 2 ç 6 ħ 4 CO 2 ≈OCO 2 CH 3 >˚F> CH 3 CO 2,其排名与Pd催化下的烯丙基氟化物相似。
Electron apportionment in cleavage of radical anions. 2. Naphthylmethyl phenyl ethers vs. naphthyl benzyl ethers
作者:Przemyslaw. Maslak、Robert D. Guthrie
DOI:10.1021/ja00270a022
日期:1986.5
ethers du titre subissent une scission de la liaison H 2 C-O lorsqu'ils sont traites par les radicaux anioniques de l'anthracene ou du fluoranthrene. Dans des conditions comparables les naphtylmethyl phenyl ethers reagissent plus de 10 4 fois plus vite que les naphtylbenzyl ethers. Interpretation
Les ethers du titre subissent une scission de la liaison H 2 CO lorsqu'ils sont traites par les radicaux anioniques de l'anthracene ou du fluoranthrene。Dans des conditions 可比 les naphtylmethyl phenyl ethers reagisent plus de 10 4 fois plus vite que lesnaphtylbenzyl ethers。解释
Cleavage rates for radiolysis-produced radical anions of naphthylmethyl phenyl ethers and naphthyl benzyl ethers
作者:Robert D. Guthrie、Manjiri Patwardhan、John E. Chateauneuf
DOI:10.1002/poc.610070306
日期:1994.3
Cleavage reactions of α- and β-naphthylmethyl phenylethers and of α- and β-naphthyl benzylethers were studied by pulse radilysis. Transient spectra indicate that reactions occur via electron capture followed by cleavage of the resultant radical anions to give arylmethyl radicals and aryloxide ions. Product studies of extensively irradiated samples are consistent with this scheme and show patterns