Results 41 to 50 of about 456,445 (341)

MCM-41-supported L-phenylalaninol as a chiral heterogeneous ligand in the enantioselective Kharasch-Sosnovsky reaction

Results in Chemistry
In this study, L-phenylalaninol, synthesized from the reduction of naturally occurring L-phenylalanine, was immobilized on MCM-41. The resulting heterogeneous ligand was comprehensively characterized using various spectroscopic techniques, such as FT-IR,
Saadi Samadi, Shadi Kamangar, Hamid Arvinnezhad, Parya Noori   +3 more
doaj   +1 more source

Flow chemistry in the multi-step synthesis of natural products

Green Synthesis and Catalysis, 2022
The total synthesis of natural products is constantly facing many challenges derived from the complexed chemical structures, the lengthy synthetic routes, the time-consuming workup procedures and the large environmental footprint. In the past two decades,
Li Wan, Gaopan Kong, Minjie Liu, Meifen Jiang, Dang Cheng, Fener Chen   +5 more
doaj   +1 more source

Synthesis and photophysical properties of new reactive fluorophenanthrenes

Comptes Rendus. Chimie, 2020
A series of six new suitably functionalized fluorophenanthrene derivatives were synthesized through a simple procedure, making use of inexpensive starting materials under mild conditions.
Hajri, Amira K., Albalawi, Marzough A., Elsayed, Nadia H., Aloui, Faouzi   +3 more
doaj   +1 more source

Asymmetric oxidation of sulfides [PDF]

, 2016
This review discusses synthesis of enantiopure sulfoxides through the asymmetric oxidation of prochiral sulfides. The use of metal complexes to promote asymmetric sulfoxidation is described in detail, with a particular emphasis on the synthesis of ...
Ford, Alan, Maguire, Anita R., O'Mahony, Graham E.   +2 more
core   +1 more source

Progress in Stereoselective Haloamination of Olefins

Molecules
The regio- and stereoselective adjacent bifunctionalization of olefins with amine and halogen groups can be effectively accomplished through catalytic haloamination methods.
Guo Zhong, Jiayu Zhou, Bin Cui, Hui Sun
doaj   +1 more source

Synthesis of enantioenriched sulfoxides [PDF]

, 2010
This review discusses strategies for the asymmetric synthesis of sulfoxides, compounds with many applications in stereoselective synthesis and in some cases with pharmaceutical application.
Kelly, Padraig, Lawrence, Simon E., Maguire, Anita R., O'Mahony, Graham E.   +3 more
core   +1 more source

Chiral amido-oxazoline functionalized MCM-41: A sustainable heterogeneous catalyst for enantioselective Kharasch–Sosnovsky and Henry reactions

Heliyon
In this study, a series of chiral amido-oxazoline ligands was synthesized with a primary focus on immobilizing the most effective ligands on MCM-41 mesoporous material.
Niloofar Tavakoli, Hamid Arvinnezhad, Shiva Majidian, Mahsa Mahramasrar, Khosrow Jadidi, Saadi Samadi   +5 more
doaj   +1 more source

Development of non-nucleoside reverse transcriptase inhibitors (NNRTIs): our past twenty years

Acta Pharmaceutica Sinica B, 2020
Human immunodeficiency virus (HIV) is the primary infectious agent of acquired immunodeficiency syndrome (AIDS), and non-nucleoside reverse transcriptase inhibitors (NNRTIs) are the cornerstone of HIV treatment.
Chunlin Zhuang, Christophe Pannecouque, Erik De Clercq, Fener Chen   +3 more
doaj   +1 more source

Development of diverse adjustable axially chiral biphenyl ligands and catalysts

iScience, 2023
Summary: Development of highly efficient and practical chiral ligands and catalysts is an eternal theme in asymmetric synthesis. Here, we report the design, synthesis, and evaluation of a new kind of adjustable axially chiral biphenyl ligands and ...
Jiyang Jie, Haijun Yang, Yufen Zhao, Hua Fu   +3 more
doaj   +1 more source

Heterogenisation of ketone catalysts within mesoporous supports for asymmetric epoxidation

, 2013
The synthesis of the first mesoporous silica (150 Å) anchored carbohydrate-derived chiral ketone is described. This new heterogeneous catalyst has been shown to be effective in the asymmetric epoxidation of olefins by oxone.
Adam, Aggarwal, Amadori, Amadori, Armstrong, Beckwith, Bellamy, Bloch, Caprio, Chadwick, Cho, Corey, Denmark, Denmark, Denmark, Dondoni, Farina, Frohn, Goeddel, Heitbaum, Hutchings, Jacobsen, Johansson Seechurn, Johnson, Johnson, Jones, Katsuki, McMorn, Page, Page, Pedragosa-Moreau, Raja, Raynor, Ren, Romesberg, Ross, Sartori, Shephard, Shu, Song, Stearman, Thomas, Thomas, Thomas, Tian, Tian, Tian, van den Broek, Wang, Wang, Wang, Wang, Wong, Wong, Xia, Xiong, Xuereb, Yang, Yang, Zhao, Zhu   +60 more
core   +1 more source