Bioactive 2-Oxazolines: A New Approach via One-Pot, Four-Component Reaction
摘要:
Substituted 2-oxazolines of the general structure shown above are found in several families of bioactive natural products and can be prepared in an efficient and general one-pot, four-component condensation.
One-Step Synthesis of Methanesulfonyloxymethyl Ketones<i>via</i>Gold-Catalyzed Oxidation of Terminal Alkynes: A Combination of Ligand and Counter Anion Enables High Efficiency and a One-Pot Synthesis of 2,4-Disubstituted Thiazoles
Mor‐DalPhos as the P,N‐bidentate ligand and mesylate as the counter ion, the resulting gold(I) complex catalyzes efficient oxidative transformations of various terminalalkynes into synthetically versatile methanesulfonyloxymethyl ketones. The mild reaction conditions and highefficiency permit the one‐pot synthesis of a range of valuable 2,4‐disubstituted thiazoles by subjecting the resulting reaction
Straightforward and Highly Efficient Synthesis of α-Acetoxy Ketones through Gold-Catalyzed Intermolecular Oxidation of Terminal Alkynes
作者:Weimin He、Jiannan Xiang、Chao Wu、Zhiwu Liang、Dong Yan
DOI:10.1055/s-0033-1338513
日期:——
corresponding α-acetoxy ketones throughgold-catalyzedintermolecular oxidation in the presence of 8-methylquinoline 1-oxide as the oxidant. The reaction probably proceeds through an α-oxo gold carbene intermolecular O–H insertion. A variety of terminal alkynes were efficiently converted into the corresponding α-acetoxy ketones throughgold-catalyzedintermolecular oxidation in the presence of 8-methylquinoline
Gold-Catalyzed Intermolecular Oxidation of Terminal Alkynes: Simple and Efficient Synthesis of α-Mesyloxy Ketones
作者:Weimin He、Jiannan Xiang、Longyong Xie、Zhiwu Liang、Dong Yan
DOI:10.1055/s-0033-1339337
日期:——
A variety of terminal alkynes were efficiently converted into the corresponding α-mesyloxy ketones through gold-catalyzedintermolecular oxidation in the presence of 3,5-dichloropyridine N-oxide as the oxidant. The reaction is proposed to proceed via α-oxo gold carbene intermolecular O–H insertion.