Results 61 to 70 of about 2,455 (178)

Synthesis of Novel BINOL Analogs: 3,3′‐Dicarbonyl‐1,1′‐binaphthyl‐4,4′‐diols as Precursors to the Uncharted 5,5′‐Binaphtho[2,1‐d]isoxazole

European Journal of Organic Chemistry, Volume 28, Issue 45, December 10, 2025.
The parent 5,5′‐binaphtho[2,1‐d]isoxazole and its 3,3′‐dimethyl and 3,3′‐diphenyl derivatives are synthesized via condensation of the respective dicarbonyl compounds with hydroxylamine, followed by cyclodehydration of the resulting dioximes. The dicarbonyl precursors are obtained through 4‐ or 6‐step sequences from 1‐naphthol or 1‐naphthaldehyde ...
Marek Surowiec, Ioannis E. Gerontitis, Petros G. Tsoungas, Panteleimon G. Takis, Panagiotis Stathopoulos, Erietta Pouliou, George Varvounis   +6 more
wiley   +1 more source

Cupreines and cupreidines: an established class of bifunctional cinchona organocatalysts

Beilstein Journal of Organic Chemistry, 2016
Cinchona alkaloids with a free 6'-OH functionality are being increasingly used within asymmetric organocatalysis. This fascinating class of bifunctional catalyst offers a genuine alternative to the more commonly used thiourea systems and because of the ...
Laura A. Bryant, Rossana Fanelli, Alexander J. A. Cobb   +2 more
doaj   +1 more source

Deuteration of Six‐Membered N‐Heteroarenes: Chemistry and Applications

Chemistry – A European Journal, Volume 31, Issue 67, December 1, 2025.
Deuterated six‐membered N‐Heteroarenes (6NHetAr) are finding utility in an increasing repertoire of applications. Our paper comprehensively reviews synthetic approaches that have been reported for the deuteration of 6NHetAr and their fused counterparts while providing an overview of established and emerging applications for these materials.
Liju Raju, Davide Benedetto Tiz, Adrian Iles, Janez Košmrlj, Ross D. Jansen‐van Vuuren   +4 more
wiley   +1 more source

The Use of N-iPr-2,2'-bipyrrolidine Derivatives as Organocatalysts for Asymmetric Michael Additions

CHIMIA, 2006
The recent rapid growth of organocatalysis has shown a new approach in organic chemistry and presents the obvious advantage in the avoidance of expensive and often toxic metals.
Sarah Mossé, Olivier Andrey, Alexandre Alexakis   +2 more
doaj   +1 more source

Horizons in Asymmetric Organocatalysis: En Route to the Sustainability and New Applications [PDF]

, 2022
Sandra Ardevines, Eugenia Marqués‐López, Raquel P. Herrera   +2 more
openalex   +1 more source

Opportunities When Chemistry Meets Biology in Catalysis and Synthesis

Transformative Chemistry, Volume 1, Issue 1, December 2025.
Biosynthesis and chemical synthesis possess complementary strengths and limitations. Integrating these two systems across multiple levels offers opportunities for molecular synthesis to become highly efficient, precise, versatile, and scalable in the future, while also ensuring environmental compatibility and resource renewability.
Xiao Xiao, Xinyi Ren, Baoguo Zhao, Xiaoguang Lei, Wen Liu, Kuiling Ding   +5 more
wiley   +1 more source

Reações de organocatálise com aminas quirais: aspectos mecanísticos e aplicações em síntese orgânica Organocatalysis reactions with chiral amines: mechanistic aspects and use on organic synthesis

Química Nova, 2009
The philosophy of organocatalysis is based on the utilization of organic compounds to catalyze organic transformations without the intervention of metals.
Giovanni W. Amarante, Fernando Coelho
doaj   +1 more source

Enantioselective α-heterofunctionalization reactions of catalytically generated C1-Lewis base enolates

Tetrahedron Chem
Chiral Lewis base (LB) organocatalysis has emerged as a powerful covalent catalysis concept which allows for highly selective asymmetric C–C and C-heteroatom bond formations.
Magdalena Piringer, Lotte Stockhammer, Lukas Vogl, David Weinzierl, Paul Zebrowski, Mario Waser   +5 more
doaj   +1 more source

Asymmetric Synthesis of 2-Arylethylamines: A Metal-Free Review of the New Millennium

Molecules
2-Arylethylamines are presented in several natural bioactive compounds, as well as in nitrogen-containing drugs. Their ability to surpass the blood–brain barrier makes this family of compounds of especial interest in medicinal chemistry.
Alejandro Manchado, Ángel García-González, Carlos T. Nieto, David Díez, Narciso M. Garrido   +4 more
doaj   +1 more source

Catalytic asymmetric synthesis of biologically important 3-hydroxyoxindoles: an update

Beilstein Journal of Organic Chemistry, 2016
Oxindole scaffolds are prevalent in natural products and have been recognized as privileged substructures in new drug discovery. Several oxindole-containing compounds have advanced into clinical trials for the treatment of different diseases. Among these
Bin Yu, Hui Xing, De-Quan Yu, Hong-Min Liu   +3 more
doaj   +1 more source