Results 1 to 10 of about 108,077 (187)

Iodine-Catalyzed Prins Cyclization of Homoallylic Alcohols and Aldehydes [PDF]

open access: yesMolecules, 2013
The iodine-catalyzed Prins cyclization of homoallylic alcohols and aldehydes was investigated under metal-free conditions and without additives. Anhydrous conditions and inert atmosphere are not required.
Luiz F. Silva   +4 more
doaj   +5 more sources

Chiral Syn-1,3-diol Derivatives via a One-Pot Diastereoselective Carboxylation/ Bromocyclization of Homoallylic Alcohols [PDF]

open access: yesiScience, 2018
Summary: Chiral syn-1,3-diols are fundamental structural motifs in many natural products and drugs. The traditional Narasaka-Prasad diastereoselective reduction from chiral β-hydroxyketones is an important process for the synthesis of these ...
Guanxin Huang   +7 more
doaj   +2 more sources

Barbier-type anti-Diastereo- and Enantioselective Synthesis of β-Trimethylsilyl, Fluorinated Methyl, Phenylthio Homoallylic Alcohols [PDF]

open access: yesScientific Reports, 2017
Catalytic Asymmetric allylation of aldehydes with functionalized allylic reagents represents an important process in synthetic organic chemistry because the resulting chiral homoallylic alcohols are valuable building blocks in diverse research fields ...
Rui Guo   +3 more
doaj   +2 more sources

A One-Pot Tandem Strategy in Catalytic Asymmetric Vinylogous Aldol Reaction of Homoallylic Alcohols [PDF]

open access: yesMolecules, 2016
Reported is a rationally-designed one-pot sequential strategy that allows homoallylic alcohols to be employed in a catalytic, asymmetric, direct vinylogous aldol reaction with a series of activated acyclic ketones, including trifluoromethyl ketones, γ ...
Xufeng Hou   +3 more
doaj   +2 more sources

Keck asymmetric allylation in natural product synthesis: applications and developments (2018–2026) [PDF]

open access: yesRSC Advances
Following our 2017 comprehensive review, this update highlights the evolving and pivotal role of the Ti–BINOL-catalyzed Keck asymmetric allylation in modern total synthesis.
Kiran Zafar   +5 more
doaj   +2 more sources

Catalytic Markovnikov hydrophosphorylation of unactivated olefins via a radical-polar crossover rearrangement [PDF]

open access: yesNature Communications
The phosphorylation of alkenes offers a diverse handle for obtaining organophosphoryls, but its regioselectivity still faces challenges, especially the radical Markovnikov hydrophosphorylation of alkenes.
Yi-Fan Li, Hong-Chen Wang, Bing Han
doaj   +2 more sources

Amines tuned controllable carbonylation for the synthesis of γ-lactones and 1,4-diones [PDF]

open access: yesNature Communications
In divergent carbonylative transformations using identical starting substrates, ligand-assisted transition metal catalysis has dominated selectively controllable transformations. However, achieving precise control of CO insertion in transition-metal-free
Yuanrui Wang   +6 more
doaj   +2 more sources

Application of beta zeolite in allylation reaction aiming formation of new C-C bonds [PDF]

open access: yesCerâmica, 2020
This study describes the formation of new C-C bonds through the allylation reaction of different aldehydes promoted by beta zeolite. This environmentally friendly method was characterized by its efficiency, versatility, and chemoselectivity in the ...
V. K. S. A. Macedo   +5 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

An Investigation of the Reactions of Substituted Homoallylic Alcohols with Various Oxidation Reagents

open access: yesMolecules, 2002
Substituted homoallylic alcohols have been synthesised both by [2,3]-Wittig rearrangement of unsymmetrical bis-allylic ethers and reaction of alkenyl chloromethyl oxiranes with Mg/THF.
A. Acar, S. Servi
doaj   +1 more source

Home - About - Disclaimer - Privacy