Allylboration of Aldehydes
نویسندگان
چکیده
منابع مشابه
Chiral Brønsted acid-catalyzed allylboration of aldehydes.
The catalytic enantioselective allylation of aldehydes is a long-standing problem of considerable interest to the chemical community. We disclose a new high-yielding and highly enantioselective chiral Brønsted acid-catalyzed allylboration of aldehydes. The reaction is shown to be highly general, with a broad substrate scope that covers aryl, heteroaryl, alpha,beta-unsaturated, and aliphatic ald...
متن کاملγ-Silylboronates in the chiral Brønsted acid-catalysed allylboration of aldehydes.
The use of functionalised allylboronic esters in the catalytic enantioselective allylboration of aldehydes is described for the first time. γ-Silylallyl pinacolate derivatives give rise to α-silyl homoallylic alcohols in high yields, with complete diastereoselectivities and high enantioselectivities, in most of the cases. The usefulness of such intermediates is showcased by their transformation...
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Recent advances in gas-liquid chromatography have permitted the separation and identification of aldehydes derived from plasmalogens, and a number of analyses of aldehydes from animal plasmalogens have been reported (l-3). Bacterial plasmalogens, on the other hand, have only recently been discovered, and no analyses of their fatty aldehydes are available (4-6). Such analyses would be of particu...
متن کاملInteraction of amines with ketone aldehydes and unsaturated aldehydes.
The optical changes occurring during the interaction of amines with ketone aldehydes or unsaturated aldehydes are accompanied by strong electron spin resonance signals, and can thus be explained as due to the transfer of one whole electron in the ground state.
متن کاملHighly diastereoselective approach to methylenecyclopropanes via boron-homologation/allylboration sequences.
A simple and efficient diastereoselective synthesis of methylenecyclopropanes is described, in which boron-homologation and allylboration are merged into a one-pot process, starting from in situ generated cyclopropenyllithium species. This unprecedented methodology opens a new route to strained alkylidenecycloalkanes containing a quaternary stereocenter, in high yields and excellent diastereome...
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ژورنال
عنوان ژورنال: Synfacts
سال: 2010
ISSN: 1861-1958,1861-194X
DOI: 10.1055/s-0030-1258672