Palladium-catalyzed formylation of organic halides with carbon monoxide and tin hydride
作者:Victor P. Baillargeon、J. K. Stille
DOI:10.1021/ja00263a015
日期:1986.2
La formylation catalysee par le palladium d'une variete de substrats organiques (iodoarenes, halogenures benzyliques, iodures vinyliques, triflates de vinyles et halogenures allyliques) avec le tributylstannane et le monoxyde de carbone donne les aldehydes avec de bons rendements dans des conditions douces et tolere un certain nombre de groupes fonctionnels
La formylation catalysee par le palladium d'une variete de substrats Organics特定的团体名称
Iron Catalysis for Room-Temperature Aerobic Oxidation of Alcohols to Carboxylic Acids
作者:Xingguo Jiang、Jiasheng Zhang、Shengming Ma
DOI:10.1021/jacs.6b03948
日期:2016.7.13
Oxidation from alcohols to carboxylicacids, a class of essential chemicals in daily life, academic laboratories, and industry, is a fundamental reaction, usually using at least a stoichiometric amount of an expensive and toxic oxidant. Here, an efficient and practical sustainableoxidation technology of alcohols to carboxylicacids using pure O2 or even O2 in air as the oxidant has been developed:
Studies on Intramolecular Alkylation of an α-Sulfinyl Vinylic Carbanion: a Novel Route to Chiral 1-Cycloalkenyl Sulfoxides
作者:N Maezaki
DOI:10.1016/s0040-4020(00)00713-4
日期:2000.9.29
investigated. Upon treatment with LDA in THF at −78°C, α-sulfinylcarbanion generated from vinylic sulfoxides cyclized at the α-sulfinyl position to give 1-cycloalkenyl sulfoxides with a five- to seven-membered ring. Although iodide or bromide is normally a good leaving group, chloride affords better results than the corresponding iodide and bromide when the reaction takes place at the benzylic position. The cyclization
Synthesis of the 2,3,4-trisubstituted indole fragments of nosiheptide and glycothiohexide
作者:David J. Bentley、John Fairhurst、Peter T. Gallagher、Astrid K. Manteuffel、Christopher J. Moody、Joanne L. Pinder
DOI:10.1039/b312964k
日期:——
the protected 4-hydroxymethyl-3-methylindole-2-carboxylate fragment 17 of the thiopeptide antibiotic nosiheptide are described starting from methyl 4-methylindole-2-carboxylate 11, itself prepared in two steps, or from 3-amino-4-chlorobenzoic acid 26. The first route can be adapted to the synthesis of a fragment of the related antibiotic glycothiohexide-alpha, the 3,4-bis(hydroxymethyl)indole-2-carboxylate