A Al ll l e en nq qu ui ir ri ie es s a an nd d m ma an nu us sc cr ri ip pt ts s s sh ho ou ul ld d b be e d di ir re ec ct te ed d t to o: :publishing research papers from all fields of chemical science, including synthesis, structure, new materials, macromolecules, supramolecular chemistry, biological chemistry, nanotechnology, surface chemistry, and analytical techniques. ).2-Chloro-1,4-naphthoquinones underwent palladium-catalysed cross coupling reactions with arylboronic acids to give the corresponding 2-aryl-1,4-naphthoquinones. Similarly, 2,3-dichloro-1,4-naphthoquinone underwent efficient cross coupling reactions with arylboronic acids to give mono or bis adducts. The required 2-chloro-1,4-naphthoquinones were conveniently prepared from the corresponding 2-hydroxy-1,4-naphthoquinones by treatment with oxalyl chloride.
The asymmetric dihydroxylation of various alkenyl
tetra-O-acetyl- β-D-glucopyranosides has given
mixtures of diols which, in one instance, has yielded a pure diastereoisomer
upon recrystallization. This optically pure diol has been converted into an
episulfide, a putative inhibitor of β-D-glucan hydrolases
TheAsymmetric Dihydroxylation of Some Alkenyl β-D-Glucopyranosides: The Preparation of an Optically Pure Episulfide.-With a view to obtaining a putative inhibitor (VI) of β-D-glucan hydrolases several alkenes such as (I) are treated under Sharpless conditions. It is noteworthy that under the conditions of the AD-mix-α the ratio of (II):(III) varies from 1:3 to 1:1 (some yields not given or in g). -(PECI, L. M.; STICK, R. V.; TILBROOK, D. M. G.; WINSLADE, M. L.; Aust.
2002quinones quinones (naphthalene compounds) Q 0910
-130Palladium-Catalyzed Cross Coupling of Arylboronic Acids with 2-Chloro-1,4-naphthoquinones: The Synthesis of 2-Aryl-and 2,3-Bisaryl-1,4-naphthoquinones.--(BEST, WAYNE M.; SIMS, COLETTE G.; WINSLADE, MERILYN; Aust.
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