67867-35-0Relevant academic research and scientific papers
Single-Step Modular Synthesis of Unsaturated Morpholine N-Oxides and Their Cycloaddition Reactions
Son, Jongwoo,Kim, Ki Hwan,Mo, Dong-Liang,Wink, Donald J.,Anderson, Laura L.
supporting information, p. 3059 - 3063 (2017/03/14)
A single-flask procedure for the generation of α-keto-N-alkenylnitrones through a Chan–Lam coupling and subsequent spontaneous 6π electrocyclization of these intermediates for the synthesis of 2H-1,4-oxazine N-oxides has been developed for a variety of α-ketooximes and alkenylboronic acids. This transformation provides a new approach to C-substituted unsaturated morpholine derivatives that are poised to undergo further functionalization for the preparation of a diverse array of novel heterocyclic structures. The scope of the new method for the synthesis of 2H-1,4-oxazine N-oxides is discussed, in addition to initial studies describing the cycloaddition reactivity of these new heterocyclic intermediates.
Asymmetric reduction of α-keto aldoxime o -ethers
Bosiak, Mariusz J.,Pakulski, Marcin M.
experimental part, p. 316 - 324 (2011/03/18)
The catalytic asymmetric reduction of -keto aldoxime O-methyl, O-benzyl, and O-trityl ethers, derived from substituted acetophenones, with borane/oxazaborolidines, by transfer hydrogenation, and with yeast, was studied. The reduction with borane/oxazaborolidines produced the corresponding -hydroxy oxime ethers, -hydroxy hydroxylamine ethers, and -amino alcohols in 39-78% yields and up to 77% ee. The carbonyl group was selectively reduced by transfer hydrogenation with formic acid-triethylamine catalyzed by RhCl[(R,R)-TsDPEN](Ce, and also with yeast, producing -hydroxy oxime ethers, up to 75% ee and 93% ee, respectively. Georg Thieme Verlag Stuttgart New York.
THROMBOPOETIN RECEPTOR ACTIVATOR AND PROCESS FOR PRODUCING THE SAME
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Page/Page column 15-16, (2008/06/13)
A preventive, therapeutic or improving agent for diseases against which activation of the thrombopoietin receptor is effective or a platelet increasing agent, which contains a thrombopoietin receptor activator represented by the formula (1): [wherein each
An efficient route to 5-(hetero)aryl-2,4′- and 2,2′-bipyridines through readily available 3-pyridyl-1,2,4-triazines
Kozhevnikov, Valery N.,Kozhevnikov, Dmitry N.,Shabunina, Olga V.,Rusinov, Vladimir L.,Chupakhin, Oleg N.
, p. 1791 - 1793 (2007/10/03)
A new route to substituted bipyridines based on a new method for the synthesis of substituted 3-pyridyl-1,2,4-triazines and their aza-Diels-Alder reactions is shown to be an efficient strategy for the preparation of structurally diverse bipyridine ligands.
An efficient route to 5,5″-diaryl-2,2′:6′,2″- terpyridines through 2,6-bis(1,2,4-triazin-3-yl)pyridines
Kozhevnikov, Valery N.,Kozhevnikov, Dmitry N.,Shabunina, Olga V.,Rusinov, Vladimir L.,Chupakhin, Oleg N.
, p. 1521 - 1523 (2007/10/03)
A new route to substituted 2,2′:6′,2″-terpyridines based on a new method for the synthesis of substituted 2,6-bis(1,2,4-triazin-3-yl) pyridines and their inverse electron demand Diels-Alder reaction is shown to be an efficient strategy for the synthesis of structurally diverse terpyridine ligands.
