Results 91 to 100 of about 14,256 (222)

Electrochemical Three‐Component Synthesis of Vinyl Sulfonamides via Decarboxylative Sulfonylation of Cinnamic Acids

ChemSusChem, EarlyView.
An efficient, metal‐free electrochemical three‐component reaction of cinnamic acids, SO2, and amines to access (E)‐β‐styryl sulfonamides is reported. Utilizing graphite electrodes and SO2 stock solutions, this decarboxylative protocol proceeds under mild conditions with high regio‐ and stereoselectivity.
Po‐Chung Chien, Harald Kelm, Georg Manolikakes   +2 more
wiley   +1 more source

Analytical Challenges in Detecting New Psychoactive Substances in Anti‐Doping: A Proof‐of‐Concept Involving Pentedrone Metabolite

Drug Testing and Analysis, EarlyView.
The paper describes an investigation related to the pentedrone norephedrine metabolite. The athlete's sample was analyzed using ultra‐performance liquid chromatography–tandem mass spectrometry (UPLC–MS/MS). According to the literature, this metabolite may originate from pentedrone, α‐pyrrolidinopentiophenone (PVP), or N‐ethylpentedrone (NEP).
D. Kwiatkowska, B. Peta, K. Grucza, A. Łabęcka, P. Konarski, K. Wojtkowiak, K. Grela, A. Sytniczuk, M. Wicka   +8 more
wiley   +1 more source

Efficient Enantiomeric Selectivity Separation Via Homochiral Graphene Oxide Membrane

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A new type of chiral graphene oxide (GO) membrane is proposed that exhibits a separation factor of up to 20.1 as well as a preferential enantiomer flux of 4.5 mmol m−2 h−1. Moreover, the only first FPLC‐compatible column has been further developed via stacking these chiral GO membranes.
Junbo Wang, Jie Jiang, Weijie Yuan, Zonglin Gu, Fangfang Dai, Binquan Peng, Liuhua Mu, Yanwen Tan, Yusong Tu, Pei Li, Liang Chen   +10 more
wiley   +1 more source

The Effect of the Gem‐Dimethyl Unit in the Gold‐Catalyzed Cycloisomerization of Aliphatic 1‐Bromoalkynes

European Journal of Organic Chemistry, EarlyView.
The conformational effect of the gem‐dimethyl motif and its isostere cyclopropane unit in the gold‐catalyzed cycloisomerization of aliphatic 1‐bromoalkynes has been studied. An unexpected inhibitory effect of the cyclopropane ring has been observed.
Rubén Miguélez, Omar Arto, Hanna Siera, Isabel Merino, Gebhard Haberhauer, Pablo Barrio   +5 more
wiley   +1 more source

Recent advances in allylation of chiral secondary alkylcopper species

Beilstein Journal of Organic Chemistry
The transition-metal-catalyzed asymmetric allylic substitution represents a pivotal methodology in organic synthesis, providing remarkable versatility for complex molecule construction.
Minjae Kim, Gwanggyun Kim, Doyoon Kim, Jun Hee Lee, Seung Hwan Cho   +4 more
doaj   +1 more source

Bioengineered Isoflavone–Probiotic Functional Foods for Sustainable Modulation of Metabolic and Reproductive Health in PCOS

Food Bioengineering, EarlyView.
Synergistic isoflavone‐probiotic action modulated metabolic, microbial and ovarian pathway ABSTRACT Polycystic ovary syndrome (PCOS) is a prevalent metabolic–endocrine disorder characterized by insulin resistance, hyperandrogenism, chronic inflammation, oxidative stress, and ovarian dysfunction, with growing evidence implicating gut microbiota ...
Jeyavelkumaran Renukadevi, Panneerselvam Sneha, Dhanapal Saravanan Mridula, Keerthivasan Nimithasree, Valliappan Sanjay   +4 more
wiley   +1 more source

Diterpenoid Diversity across Land Plants

Helvetica Chimica Acta, EarlyView.
Here we bridge the knowledge of diterpene chemical diversity, biosynthesis, and evolution from nonvascular mosses and liverworts to that known from vascular plants. ABSTRACT The diverse array of diterpenoid natural products stems from the ease of manipulating the promiscuity of diterpene cyclases.
Anita Berg, Chad K. Papenfuhs, Amy E. Fraley   +2 more
wiley   +1 more source

Enzymatic Ring‐Opening Polymerization of ε‐Caprolactone in Novel Green Solvents: from Batch Systems to Continuous Flow Mesoreactors

Macromolecular Materials and Engineering, EarlyView.
Multi‐gram synthesis of CaLB‐catalyzed ROP of ε‐CL in green organic media under flow conditions. ABSTRACT The transition toward sustainable alternatives in polymeric material production is a critical step in reducing the environmental impact of the traditional plastic industry.
Tullio Crovetto, Andrea Pasquale, Daniele Alessandro Consolini, Martina Letizia Contente, Alessandro Pellis   +4 more
wiley   +1 more source

Corrigendum: Functional Characterization and Structural Insights Into Stereoselectivity of Pulegone Reductase in Menthol Biosynthesis

Frontiers in Plant Science, 2022
Chanchan Liu, Chanchan Liu, Qiyu Gao, Zhuo Shang, Jian Liu, Siwei Zhou, Jingjie Dang, Licheng Liu, Iris Lange, Narayanan Srividya, B. Markus Lange, Qinan Wu, Qinan Wu, Wei Lin, Wei Lin, Wei Lin, Wei Lin   +16 more
doaj   +1 more source

Stereoselective sulfoxide [PDF]

Nature Chemistry, 2010
openaire   +1 more source