An iron(III) salt catalyzed retro-Claisencondensation between an alcohol and a 1,3-diketone was investigated. The mechanism involves the formation of a metal-induced six-membered cyclic transition state and cleavage of the C–C bond. Regioselective esterification and one-pot conversion of silyl ethers into esters with good yields was observed. Simple reaction conditions, high yields, and broad scope
Copper porphyrin-catalyzed cross dehydrogenative coupling of alkanes with carboxylic acids: Esterification and decarboxylation dual pathway
作者:Xiao-Yan Chen、Shuang Yang、Bao-Ping Ren、Lei Shi、Dong-Zi Lin、Hao Zhang、Hai-Yang Liu
DOI:10.1016/j.tet.2021.132377
日期:2021.9
A dual-functional copper porphyrin-catalyzed cross dehydrogenative coupling (CDC) of carboxylic acids with alkanes was reported firstly. The reaction gives allylic esters or alkylalkenes depending on the carboxylic acid substrates. Copper porphyrin catalyzed CDC method has the superiority of short reaction time, good functional group tolerance, base and solvent free, producing target products in an
Direct Esterification of Carboxylic Acids with Alcohols Catalyzed by Iron(III) Acetylacetonate Complex
作者:Shiue-Shien Weng、Fong-Kuang Chen、Chih-Shueh Ke
DOI:10.1080/00397911.2012.725265
日期:2013.10.2
Abstract Direct condensation of carboxylic acids and alcohols with electronic, steric, and functional group variations was carried out using the environmentally benign, moisture-stable, inexpensive, and recoverable iron(III) acetylacetonate [Fe(acac)3] as catalyst (5 mol%). This iron salt efficiently catalyzed the esterification of several primary and secondary alcohols in refluxing xylene, without the need
Construction of Esters through Sulfuryl Fluoride (SO2F2) Mediated Dehydrative Coupling of Carboxylic Acids with Alcohols at Room Temperature
作者:Shi-Meng Wang、Njud S. Alharbi、Hua-Li Qin
DOI:10.1055/s-0039-1690017
日期:2019.10
on gram scale. A facile method for the construction of esters through dehydrative coupling of carboxylic acids with alcohols is developed. The reactions are mediated by sulfuryl fluoride (SO2F2) at room temperature and proceed with high efficiency. The method has several advantages including broad substrate scope, mild conditions, excellent functional group compatibility and affords high yields, even
抽象的 开发了一种通过羧酸与醇类的脱水偶合来构建酯的简便方法。该反应在室温下由硫酰氟(SO 2 F 2)介导,并以高效率进行。该方法具有许多优点,包括广泛的底物范围,温和的条件,出色的官能团相容性,即使在克级上也能提供高收率。 开发了一种通过羧酸与醇类的脱水偶合来构建酯的简便方法。该反应在室温下由硫酰氟(SO 2 F 2)介导,并以高效率进行。该方法具有许多优点,包括广泛的底物范围,温和的条件,出色的官能团相容性,即使在克级上也能提供高收率。
Metal‐Organic Framework Supported Copper Photoredox Catalysts for Iminyl Radical‐Mediated Reactions
A binap-ligated copper dimer has been heterogenized on a pillar-layered MOF surface for the first time using a hydroxamic acid linker. This MOF-supported dimeric copper photocatalyst demonstrates much higher activity and recyclability than its homogeneous counterparts in intra- and intermolecular radicalreactions of N-acyloxy imidates and O-acyl oximes.