Abstract A convenient and facile synthesis of phenacyl esters is reported by the reaction of phenacyl bromide with potassium salts of aromatic acids in the presence of β‐cyclodextrin in water under neutral conditions. IICT Communication 050211.
A solvent-reagent selection guide for Steglich-type esterification of carboxylic acids
作者:Andrew Jordan、Kyran D. Whymark、Jack Sydenham、Helen F. Sneddon
DOI:10.1039/d1gc02251b
日期:——
The Steglich esterification is a widely employed method for the formation of esters under mild conditions. A number of issues regarding the sustainability of this transformation have been identified, chiefly the use of hazardous carbodiimide coupling reagents in conjunction with solvents with considerable issues such as dichloromethane (DCM) and N,N-dimethylformamide (DMF). To overcome these issues
Photoreleasable protecting groups on alcohols, phosphates and diacids and the use thereof
申请人:University of Maryland
公开号:US06392089B1
公开(公告)日:2002-05-21
Alcohol, phosphate, and diacid derivatives that may be deprotected by irradiation are disclosed. The protecting group is an arylacyl or heteroarylacyl group.
酒精、磷酸酯和二酸衍生物可能通过辐射去保护,所使用的保护基是芳基酰基或杂环芳基酰基。
Kinetics of reaction of triethylammonium carboxylates with α-halogenocarbonyl compounds in organic solvents
作者:M.Krishna Pillay、K. Kannan、P. Ramasubramanian
DOI:10.1016/s0040-4020(01)90893-2
日期:1983.1
of the reaction of phenacyl bromide with triethylammonium p-substituted benzoates and phenoxyacetates at 25°, 30° and 35° in acetone suggest a rigid cyclic transition state involving a hydrogen bonded ion-pair as the active nucleophile. The effect of addition of water on the rate constant is rationalized. Regression analysis on single parameter treatment on benzoates shows that the reaction obeys the
Optimizing P,N-Bidentate Ligands for Oxidative Gold Catalysis: Efficient Intermolecular Trapping of α-Oxo Gold Carbenes by Carboxylic Acids
作者:Kegong Ji、Yulong Zhao、Liming Zhang
DOI:10.1002/anie.201301601
日期:2013.6.17
Control confirmed: Optimization of P,N‐bidentateligands (L) reveals the importance of conformation control for intermolecular trapping of reactive α‐oxo gold carbene intermediates. As a result, the highly efficient and broadly applicable synthesis of carboxymethyl ketones from readily available carboxylic acids and terminal alkynes proceeds under mild reaction conditions.
控制确认:P,N-双齿配体 ( L ) 的优化揭示了构象控制对于反应性 α-氧代金卡宾中间体的分子间捕获的重要性。因此,在温和的反应条件下,可以从易得的羧酸和末端炔烃高效且广泛地合成羧甲基酮。