Imidazole hydrochloride as an additive promotes the reaction of amidoximes and DMA derivatives to generated 3,5-disubstituted-1,2,4-oxadiazoles in low to excellent yields without the use of coupling reagents, oxidants, strong acids or bases and other additives.
A novel synthesis of 3,5-disubstituted 1,2,4-oxadiazoles is described from a one-pot, three-component reaction between nitriles, hydroxylamine, and Meldrum's acids undermicrowaveirradiation and solvent-freeconditions in good to excellent yields.
Efficient Synthesis of Functionalized Indene Derivatives via Rh(III)‐Catalyzed Cascade Reaction between Oxadiazoles and Allylic Alcohols
作者:Jing Zhang、Jun‐Shu Sun、Ying‐Qi Xia、Lin Dong
DOI:10.1002/adsc.201801606
日期:2019.4.23
A highly efficient rhodium(III)‐catalyzedsynthesis of novel functionalized indene derivatives has been achieved via C−H activation/intramolecular aldol condensation. This cascade reaction is an atom economical protocol which could be further applied to build more complexcompounds.
Preparation, structure, and versatile reactivity of pseudocyclic benziodoxole triflate, new hypervalent iodine reagent
作者:Akira Yoshimura、Khiem C. Nguyen、Scott C. Klasen、Akio Saito、Victor N. Nemykin、Viktor V. Zhdankin
DOI:10.1039/c5cc02009c
日期:——
A new pseudocyclic triflate derivative of benziodoxole (IBA-OTf) was prepared and characterized by a single crystal X-ray analysis. This new, highly electrophilic hypervalentiodinereagent readily reacts with various nucleophilic...
[DE] PROLINDERIVATE<br/>[EN] PROLINE DERIVATIVES<br/>[FR] DERIVES DE PROLINE
申请人:MERCK PATENT GMBH
公开号:WO2006034789A1
公开(公告)日:2006-04-06
Neue Verbindungen der Formel (I) worin X, Y, R1, R2, R3, R4 und n die in Patentanspruch 1 angegebene Bedeutung haben, sind Inhibitoren des Koagulationsfaktors Xa und können zur Prophylaxe und/oder Therapie von thromboembolischen Erkrankungen und zur Behandlung von Tumoren eingesetzt werden.