Asymmetric catalysis for the construction of quaternary carbon centres: nucleophilic addition on ketones and ketimines

O Riant, J Hannedouche - Organic & biomolecular chemistry, 2007 - pubs.rsc.org
There is a growing need in organic synthesis for efficient methodologies for the asymmetric
synthesis of quaternary carbon centres. One of the most attractive and straightforward …

Asymmetric addition of diorganozinc reagents to aldehydes and ketones

CM Binder, B Singaram - Organic Preparations and Procedures …, 2011 - Taylor & Francis
The direct addition of organometallic reagents to carbonyl compounds is an efficient and
versatile method to generate CC bonds with concomitant formation of secondary and tertiary …

Catalytic asymmetric vinylation and dienylation of ketones

H Li, PJ Walsh - Journal of the American Chemical Society, 2005 - ACS Publications
A solution to the long-standing problem of catalytic asymmetric vinylation of ketones is
reported. Vinylzinc reagents are generated via hydrozirconation of terminal alkynes followed …

Catalytic asymmetric vinylation of ketones

H Li, PJ Walsh - Journal of the American Chemical Society, 2004 - ACS Publications
This communication describes the catalytic asymmetric 1, 2-addition of vinylzinc reagents to
aromatic, α, β-unsaturated, and dialkyl ketones with enantioselectivities between 79 and …

Asymmetric addition to ketones: enantioselective formation of tertiary alcohols

C Garcia, VS Martin - Current Organic Chemistry, 2006 - ingentaconnect.com
The stereoselective formation of chiral tertiary alcohols is of great importance for the
synthesis of enantiomerically pure natural products and pharmaceuticals. The simplest …

Stabilized Conversion Efficiency and Dye-Sensitized Solar Cells from Beta vulgaris Pigment

AR Hernández-Martínez, M Estévez, S Vargas… - International journal of …, 2013 - mdpi.com
Dye-Sensitized Solar Cells (DSSCs), based on TiO2 and assembled using a dye from Beta
vulgaris extract (BVE) with Tetraethylorthosilicate (TEOS), are reported. The dye BVE/TEOS …

Intramolecular Alkynylcyclopropanation of Olefins Catalyzed by Bi(OTf)3: Stereoselective Synthesis of 1‐Alkynyl‐3‐azabicyclo[3.1.0]hexanes.

K Komeyama, N Saigo, M Miyagi, K Takaki - ChemInform, 2010 - Wiley Online Library
Intramolecular Alkynylcyclopropanation of Olefins Catalyzed by Bi(OTf)<sub>3</sub>:
Stereoselec Page 1 ChemInform 2010, 41, issue 20 © 2010 Wiley-VCH Verlag GmbH & Co …

Improving photochemical properties of Ipomea pescaprae, Imperata cylindrica (L.) Beauv, and Paspalum conjugatum Berg as photosensitizers for dye sensitized …

EC Prima, B Yuliarto, V Suendo, Suyatman - Journal of Materials Science …, 2014 - Springer
This paper reports on the improving photochemical properties of natural dye using acid
treatment, coadsorber addition, and dye combination. The natural pigments have been …

A One-Pot Multicomponent Coupling Reaction for the Stereocontrolled Synthesis of (Z)-Trisubstituted Allylic Alcohols

YK Chen, PJ Walsh - Journal of the American Chemical Society, 2004 - ACS Publications
In this Communication, we outline a new one-pot, multicomponent coupling reaction that
allows easy access to (Z)-trisubstituted allylic alcohols. Our strategy is based on E to Z …

Highly enantioselective 3-furylation of ketones using (3-furyl) titanium nucleophile

S Zhou, CR Chen, HM Gau - Organic Letters, 2010 - ACS Publications
A novel asymmetric 3-furyl addition of (3-furyl) Ti (O i Pr) 3 to ketones in the presence of 10
mol%(S)-BINOL is reported. The catalytic system works excellently for aromatic ketones, α-or …