phosphinates and some H-phosphonate diesters is promoted by the base DBU. Only more reactive alkyl halides react in preparatively useful yields. However, the method provides easy access to important H-phosphinate buildingblocks, without the need for a protecting group strategy or metal catalysts. The reaction is conveniently conducted at, or below, room temperature. The preparation of methyl-H-phosphinate
The first solvent- and catalyst-free procedure for the Michaelis–Arbuzov reaction under flow conditions was developed. A variety of alkylphosphonic esters could be obtained using this protocol starting from the corresponding trialkyl phosphites and even catalytic amounts of alkyl halides with very short reaction times (8.33–50 min) and excellent conversions. In general, this protocol works effectively
First Use of Benzyl Phosphites in theMichaelis-Arbuzov Reaction synthesis of mono-, Di-, and triphosphate analogs
作者:Mourad Saady、Luc Lebeau、Charles Mioskowski
DOI:10.1002/hlca.19950780314
日期:1995.5.10
Micaelis-Arbuzov reaction. Special experimental conditions allowed preparation of a set of phosphonate analogs of mono-, di-, and triphosphate. Furthermore, regioselective monodeprotection makes these molecules useful building blocks for the synthesis of analogs of polyphosphorylated compounds of biological interest (e.g. nucleotides), after removal of all phosphonate benzyl ester groups under very
Tailoring the Specificity and Reactivity of a Mechanism-Based Inactivator of Glucocerebrosidase for Potential Therapeutic Applications
作者:Brian P. Rempel、Michael B. Tropak、Don J. Mahuran、Stephen G. Withers
DOI:10.1002/anie.201103924
日期:2011.10.24
Chaperoning an enzyme: Fluorosugar glycosidase inactivators with tunable phosphorus‐based leaving groups react quickly with the catalytic nucleophile in β glucocerebrosidase (blue circle; Bn=benzyl). In Western blot analysis, Gaucher patient cells treated with these inactivators show increased intracellular levels of mutant enzyme, presumably because of increased transit from the endoplasmic reticulum
The Palladium Acetate-Catalyzed Microwave-Assisted Hirao Reaction without an Added Phosphorus Ligand as a “Green” Protocol: A Quantum Chemical Study on the Mechanism
作者:György Keglevich、Réka Henyecz、Zoltán Mucsi、Nóra Zs. Kiss
DOI:10.1002/adsc.201700895
日期:2017.12.19
together, 15-30% of the P-reagent is necessary beyond its stoichiometric quantity. In the coupling reaction of diphenylphosphineoxide, it was possible to apply diethyl phosphite as the reducing agent and as the P-ligand. The reactivities of the diethyl phosphite and diphenylphosphineoxide reagents were compared in a competitive reaction. The mechanism and the energetics of this new variation of the