Results 131 to 140 of about 35,698 (262)
European Journal of Organic Chemistry, EarlyView.A cascade reaction under phase‐transfer conditions between 3‐nitro indoles and isocyanomethylene dibenzenes affords the construction of pyrrolo[3,4‐b]indole cores. Control experiments provide insight into moderate product yields and clarify why the reaction is not amenable to asymmetric induction. A cascade reaction enabling the construction of pyrrolo[
Ana Mikleušević +4 more
wiley +1 more source
European Journal of Organic Chemistry, EarlyView.Bridging the gap. Beyond deck functionalization, the ethylene bridges of [2.2]paracyclophanes offer a largely unexploited reactivity landscape. This review showcases strategies to functionalize these bridges and leverage them to build novel cyclophane architectures.
Rongyu Sun +3 more
wiley +1 more source
Memory of Chirality in Radical Addition–Translocation–Cyclization Cascades
Helvetica Chimica Acta, EarlyView.Radical addition–translocation–cyclization cascades of chiral alkynes show striking memory of chirality (MoC), with strong retention of configuration when fast, polarity favored cyclization are involved. The most effective system employs a highly electron‐poor pentafluorobenzenesulfonyl group.
Christian Simon Gloor +3 more
wiley +1 more source
The continuing significance of chiral agrochemicals
Pest Management Science, Volume 81, Issue 4, Page 1697-1716, April 2025.In the time frame 2018–2023, around 43% of the 35 chiral agrochemicals introduced to the market (herbicides, fungicides, insecticides, acaricides, and nematicides) contain one or more stereogenic centers in the molecule, and almost 69% of them have been marketed as racemic mixtures of enantiomers or stereoisomers.
Peter Jeschke
wiley +1 more source
Rapid Communications in Mass Spectrometry, EarlyView.Rationale Mass spectrometry (MS) is introduced to high school students in the UK in many pre‐university course syllabi. As such, we have identified the use of MS as a key technique that should be taught practically to undergraduates from the outset of their studies.
Andrew F. Worrall +3 more
wiley +1 more source
Advances in the Different Synthetic Routes of Fluorinated Hydrazines
The Chemical Record, EarlyView.This review highlights the various routes to the preparation of fluorinated hydrazines, thereby promoting the exploration of innovative methods for the synthesis of new N‐fluorinated hydrazines. Their synthesis mainly involves synthetic routes such as organometallic, organocatalytic, and photocatalytic.
Dimitra Kyrko, Benoît Crousse
wiley +1 more source
Journal of Forensic Sciences, EarlyView.Abstract In the present study, the metabolism of khat (Catha edulis) and pseudoephedrine was compared with the aim of identifying objective criteria that could be used to discriminate between them for forensic and doping‐control purposes. An in vitro study using human liver microsomes and an in vivo study using rat urine were performed under harmonized
Jong Suk Park +6 more
wiley +1 more source
Asymmetric Electrophilic alpha-Amidoalkylation 6 [PDF]
, 1989 Praschak, Ilona, Wanner, Klaus Th.
core +1 more source
S‐Adenosylmethionine (SAM) hydrolases counter increased SAM epimerisation in thermophilic archaea
The FEBS Journal, EarlyView.S‐Adenosyl‐l‐methionine (SAM) is a vital enzyme cofactor. Epimerisation at the sulfonium centre of biologically active (SS,SCα)‐SAM is driven by heat, yielding biologically inactive (RS,SCα)‐SAM. Here, two novel archaeal SAM hydrolases from the thermophilic Sulfolobus acidocaldarius and the halophilic Haloferax volcanii are shown to cleave (RS,SCα)‐SAM.
Agnes Bartels +7 more
wiley +1 more source
Questionable Stereoformulas of Diastereomers [PDF]
Chemistry International -- Newsmagazine for IUPAC, 2004 openaire +2 more sources