Solvolysis of 4-Halogeno-4-Alkyl-2,6-di-tert-butylcyclohexa-2,5-dienones Induced by Positive Halogen Donors as Electrophiles
作者:Kanji Omura
DOI:10.1071/ch13257
日期:——
halogen donors such as N-iodosuccinimide (NIS) induce solvolysis of dienones 1, as model 4-halogenocyclohexa-2,5-dienones, in different hydroxylic solvents (ROH), yielding the 4-RO-cyclohexa-2,5-dienones (2). The rate of the solvolysis with NIS is highly dependent on the structure of ROH. The problem of such dependency is overcome by running the reaction in ROH diluted with MeCN, a polar aprotic solvent
Copper-Catalyzed Alkylation of Quinoxalin-2(1H)-ones with Styrenes and tert-Butyl Peroxybenzoate
作者:Xiaoyang Zhong、Xinying Li、Hua Yao、Sen Lin、Zhaohua Yan、Hui Guo、Li Min
DOI:10.1055/a-1815-3539
日期:2022.6
A simple strategy for the synthesis of 3-substituted quinoxalin-2(1H)-ones containing ether units is proposed. The method is realized by the three-component synthesis of quinoxalin-2(1H)-ones, styrenes, and tert-butyl peroxybenzoate (TBPB). This reaction has good functional group tolerance and may involve a free-radical process.
提出了一种合成含醚单元的 3-取代的 quinoxalin-2(1 H )-ones 的简单策略。该方法通过quinoxalin-2(1 H )-ones、苯乙烯和过氧苯甲酸叔丁酯(TBPB)的三组分合成来实现。该反应具有良好的官能团耐受性,可能涉及自由基过程。
p-Quinols and p-Quinol Ethers from 2,4,6-Trialkylphenols
作者:Kanji Omura
DOI:10.1055/s-0029-1217127
日期:2010.1
The oxidation of 2,4,6-trialkylphenols with lead(IV) oxide and 70% perchloric acid in water-acetone or in alcohols gives p-quinols or p-quinol ethers, respectively. Some nonmetallic oxidants serve the same purpose.