Synthesis of β-Dicarbonyl Compounds Using 1-Acylbenzotriazoles as Regioselective C-Acylating Reagents
作者:Alan R. Katritzky、Alfredo Pastor
DOI:10.1021/jo991878f
日期:2000.6.1
1-Acylbenzotriazoles 1 are efficient C-acylation reagents for the regioselective conversion of ketone enolates 2 into beta-diketones 3.
1-酰基苯并三唑1是有效的C-酰化试剂,可将酮烯醇酸酯2区域选择性转化为β-二酮3。
Discovery of a potent, non-triketone type inhibitor of 4-hydroxyphenylpyruvate dioxygenase
作者:Shean-Woei Lin、Yun-Loung Lin、Tzu-Ching Lin、Ding-Yah Yang
DOI:10.1016/s0960-894x(00)00228-6
日期:2000.6
3-Cyclopropanecarbonyloxy-2-cyclohexen-1-one has been found to be a new, potent, low molecular weight non-triketone type inhibitor of 4-hydroxyphenylpyruvatedioxygenase with IC50 value of 30 nM. Preliminary studies suggest that the two carbonyl groups present in the compound are crucial for the inhibition activity.
Acylpalladium species derivable via oxidative addition of a Pd phosphine complex with aryl and alkenyl iodides and CO insertion can react, either intramolecularly or tntermolecularly, with enolates generated in situ to give the corresponding enol esters and enol laotones.
Toluene oxidation is one of the substantial industrial technologies since oxidized products are industrially very important intermediates. A Fe3O4@cysteine@Cu‐catalysed reaction that uses tert‐butyl hydroperoxide as oxidant to produce esters from toluene and β‐diketones or β‐keto esters, enolate precursors, has been developed. Oxidativeesterification of toluene with 1,3‐dicarbonyl derivatives led
甲苯氧化是重要的工业技术之一,因为氧化产物是工业上非常重要的中间体。已经开发出一种Fe 3 O 4 @胱氨酸@Cu催化的反应,该反应使用叔丁基氢过氧化物作为氧化剂,由甲苯和β-二酮或β-酮酸酯(烯醇盐前体)生成酯。甲苯与1,3-二羰基衍生物的氧化酯化反应导致C-O键形成和直接的CH-H功能化。
Process for the preparation of acylated cyclic 1,3-dicarbonyl compounds
申请人:Zeneca Limited
公开号:US06218579B1
公开(公告)日:2001-04-17
A process for preparing a compound of Formula (I); where Q completes an optionally substituted 5-or 6-member saturated carbocyclic ring and R is optionally substituted phenyl or optionally substituted C3-C6 cycloalkyl which comprises the rearrangement of a compound of Formula (II); where Q and R are as defined in relation to Formula (I) in a polar aprotic, dipolar aprotic or aromatic hydrocarbon solvent in the presence of a moderate base and an azole.