The synthesis of 2,3,5-trisubstituted phenols
نویسندگان
چکیده
منابع مشابه
comparison of catalytic activity of heteropoly compounds in the synthesis of bis(indolyl)alkanes.
heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...
15 صفحه اولCatalytic asymmetric synthesis of trisubstituted aziridines.
A method is described which provides for the direct asymmetric catalytic synthesis of trisubstituted aziridines from imines and diazo compounds. While unactivated imines were not reactive to α-diazo carbonyl compounds in which the diazo carbon was disubstituted, N-Boc imines react with both α-diazo esters and α-diazo-N-acyloxazolidinones to give trisubstituted aziridines with excellent diastere...
متن کاملAsymmetric Synthesis of 2,4,5-Trisubstituted Δ2-Thiazolines
Δ(2)-Thiazolines are interesting heterocycles that display a wide variety of biological characteristics. They are also common in chiral ligands used for asymmetric syntheses and as synthetic intermediates. Herein, we present asymmetric routes to 2,4,5-trisubstituted Δ(2)-thiazolines. These Δ(2)-thiazolines were synthesized from readily accessible/commercially available α,β-unsaturated methyl es...
متن کاملRapid diastereocontrolled synthesis of 2,2,5-trisubstituted pyrrolidines.
2,2,5-Trisubstituted pyrrolidines are available from allylic pyroglutamates by Ireland-Claisen ester rearrangement followed by Eschenmoser sulfide contraction and reduction in a highly diastereoselective and efficient sequence. Some of the products from this sequence exhibit activity against S. aureus, but are much less active against E. coli.
متن کاملSolid-phase synthesis of 2,3,5-trisubstituted indoles.
2,3,5-Trisubstituted indoles are synthesized in three steps starting from resin-bound aniline 2. R1 is introduced by a palladium-mediated coupling of the aryl iodide with terminal alkynes followed by intramolecular cyclization to form the indole core. Acylation at C-3 with an acid chloride in the presence of AlCl(3) catalyst introduces R2. The indole C-5 position is then diversified either by S...
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ژورنال
عنوان ژورنال: Arkivoc
سال: 2001
ISSN: 1551-7012
DOI: 10.3998/ark.5550190.0002.404