Results 21 to 30 of about 17,659 (225)

Allylation of Orthoquinones Towards Annulated Polycyclic Aromatic Systems

open access: yesMolecules, 2018
Promising results of an efficient and convenient strategy for the annulation of polycyclic aromatic compounds (PACs), employing orthoquinones as starting material and comprising allylation, pinacol rearrangement, ring-closing metathesis (RCM), and one ...
Mariusz Kędziorek, Liliana Dobrzańska
doaj   +1 more source

Enantioselective synthesis of non-proteinogenic 2-arylallyl-α-amino acids via Pd/In catalytic cascades [PDF]

open access: yes, 2006
An efficient synthesis of both R- and S-enantiomers of 2-arylallyl-α-amino acids via a diastereoselective Pd/In mediated catalytic allylation of chiral N-sulfinyl-α-imino esters is described.
Anwar   +23 more
core   +1 more source

Chromoselective access to Z- or E- allylated amines and heterocycles by a photocatalytic allylation reaction

open access: yesNature Communications, 2019
Tsuji–Trost allylation is a traditional method for selective C-C bond formation that involves the use of palladium-based catalysts. Here, the authors report a metal-free, photocatalytic allylation of several heterocycles, amines and alcohols, which can ...
Ana María Martínez-Gualda   +8 more
doaj   +1 more source

A chiral oxazoline for catalytic enantioselective Nozaki-Hiyama-Kishi allylation and vinylation of aldehydes

open access: yesCatalysis Communications, 2021
Asymmetric allylation and vinylation of aldehydes with allyl halides and vinyl halides have been achieved using the chromium(II)-oxazoline catalyst.
Sharad V. Kumbhar, Chinpiao Chen
doaj   +1 more source

Bi(III)-Catalyzed Enantioselective Allylation Reactions of Ketimines

open access: yesiScience, 2019
Summary: Chiral homoallylic amines not only are found in pharmaceutically relevant compounds but also serve as versatile building blocks for chemical synthesis.
Jie Wang   +5 more
doaj   +1 more source

Asymmetric synthesis of a stereopentade fragment toward latrunculins

open access: yesBeilstein Journal of Organic Chemistry, 2023
Latrunculins are marine toxins used in cell biology to block actin polymerization. The development of new synthetic strategies and methods for their synthesis is thus important in order to improve, modulate or control this biological value.
Benjamin Joyeux   +3 more
doaj   +1 more source

Syntheses of (+)-30-epi-, (-)-6-epi-, (±)-6,30-epi-13,14-didehydroxyisogarcinol and (±)-6,30-epi-garcimultiflorone A utilizing highly diastereoselective, Lewis acid-controlled cyclizations [PDF]

open access: yes, 2016
The first syntheses of 13,14-didehydroxyisogarcinol (6) and garcimultiflorone A (5) stereoisomers are reported in six steps from a commercially available phloroglucinol.
Boyce, Jonathan H.   +2 more
core   +1 more source

Novel Chiral Bis-Phosphoramides as Organocatalysts for Tetrachlorosilane-Mediated Reactions

open access: yesMolecules, 2017
The formation of novel chiral bidentate phosphoroamides structures able to promote Lewis base-catalyzed Lewis acid-mediated reactions was investigated.
Sergio Rossi   +3 more
doaj   +1 more source

Reactivity of Phenol Allylation Using Phase-Transfer Catalysis in Ion-Exchange Membrane Reactor

open access: yesInternational Journal of Chemical Engineering, 2012
This study investigates the reactivity of phenol allylation using quaternary ammonium salt as a phase-transfer catalyst in three types of membrane reactors.
Ho Shing Wu, Yeng Shing Fu
doaj   +1 more source

Palladium-catalyzed allylation of norbornadiene: Experimental and quantum chemical research

open access: yesТонкие химические технологии, 2023
Objectives. Catalytic processes involving norbornadiene (NBD) and norbornene (NBN) derivatives provide exceptional opportunities for the synthesis of a wide range of carbocyclic hydrocarbons.
S. A. Durakov   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy