Oxygenation reactions with molecular oxygen (O2) as the oxygen source provides a green and straightforward strategy for the construction of O‐containing compounds. Demonstrated here is a novel N‐heterocyclic carbene (NHC) catalyzed oxidative transformation of simple and readily available organic halides into valuable esters through the incorporation of O‐atomsfromO2. Mechanistic studies prove that
Aryl trifluoromethyl ketone hydrates as precursors of carboxylic acids and esters1
作者:Antonio Delgado、Jon Clardy
DOI:10.1016/s0040-4039(00)78858-7
日期:1992.5
A simple method for the preparation of aryl carboxylic acids and esters from aryl trifluoromethyl ketone hydrates is described.
描述了一种由芳基三氟甲基酮水合物制备芳基羧酸和酯的简单方法。
Effect of Ancillary Ligand in Cyclometalated Ru(II)–NHC-Catalyzed Transfer Hydrogenation of Unsaturated Compounds
作者:Somnath Bauri、S. N. R. Donthireddy、Praseetha Mathoor Illam、Arnab Rit
DOI:10.1021/acs.inorgchem.8b02246
日期:2018.12.3
transfer hydrogenation of carbonyl substrates. The electron-rich precatalyst, 2c, containing p-OMe-substituted NHCligand performed significantly better than both unsubstitutedcomplex 2a and p-CF3 substituted electron-poor complex 2b in ketone reduction. Whereas bulky mesoionic triazolylidene ligandcontainingcomplex 4 was found to be superior catalyst for aldehyde reduction and the precatalyst 2a
SO<sub>2</sub>F<sub>2</sub>-Mediated One-Pot Synthesis of Aryl Carboxylic Acids and Esters from Phenols through a Pd-Catalyzed Insertion of Carbon Monoxide
作者:Wan-Yin Fang、Jing Leng、Hua-Li Qin
DOI:10.1002/asia.201700891
日期:2017.9.5
A one-pot Pd-catalyzed carbonylation of phenols into their corresponding aryl carboxylic acids and esters through the insertion of carbon monoxide has been developed. This procedure offers a direct synthesis of aryl carboxylic acids and esters from inexpensive and abundant starting materials (phenols, SO2F2 and CO) under mild conditions. This method tolerates a broad range of functional groups and
通过一氧化碳的插入,一锅Pd催化苯酚将羰基羰基化为相应的芳基羧酸和酯。该方法可在温和的条件下,由廉价而丰富的起始原料(苯酚,SO 2 F 2和CO)直接合成芳基羧酸和酯。该方法可耐受多种官能团,也可用于复杂天然产物的修饰。
Synthesis, characterization and catalytic performances of benzimidazolin-2-iminato actinide (IV) complexes in the Tishchenko reactions for symmetrical and unsymmetrical esters
作者:Heng Liu、Maxim Khononov、Natalia Fridman、Matthias Tamm、Moris S. Eisen
DOI:10.1016/j.jorganchem.2017.09.020
日期:2018.2
benzimdazolin-2-iminato actinide−(IV) complexes [(Bim7-MeDipp/MeN)An(N(SiMe3)2)3] (An = U (3), Th (4)) and [(Bim4-MeDipp/MeN)An(N(SiMe3)2)3] (An = U (5), Th (6)) were synthesized and their solid state structures were established by single-crystal X-ray diffraction analysis. The catalytic performances of complexes 3–6 towards the homo- and cross-coupling of aldehydes (Tishchenko reaction) were studied and the thorium