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Pd-Catalyzed C–H Alkoxycarbonylation of Phenethyl- and Benzylamines with Chloroformates as CO Surrogates
(Wiley, 2021-03-26)
The site‐selective functionalization of C−H bonds within a complex molecule remains a challenging task of capital synthetic importance. Herein, an unprecedented Pd‐catalyzed C(sp2)−H alkoxycarbonylation of phenylalanine ...
Recent Advances on the Halo- and Cyano-Trifluoromethylation of Alkenes and Alkynes
(MDPI, 2021-11-28)
Incorporation of fluorine into organic molecules is a well-established strategy in the design of advanced materials, agrochemicals, and pharmaceuticals. Among numerous modern synthetic approaches, functionalization of ...
Advances in the Development of Trifluoromethoxylation Reagents
(MDPI, 2021-12-10)
This review provides a short summary of the traditional methods for synthesis of CF3-O-containing compounds, followed by a critical overview of known trifluoromethoxylating reagents, focusing on their preparation, synthetic ...
Recommended Tests for the Self-Disproportionation of Enantiomers (SDE) to Ensure Accurate Reporting of the Stereochemical Outcome of Enantioselective Reactions
(MDPI, 2021-05-07)
The purpose of this review is to highlight the necessity of conducting tests to gauge the magnitude of the self-disproportionation of enantiomers (SDE) phenomenon to ensure the veracity of reported enantiomeric excess (ee) ...
A Call for a Change in Policy Regarding the Necessity for SDE Tests to Validate the Veracity of the Outcome of Enantioselective Syntheses, the Inherent Chiral State of Natural Products, and Other Cases Involving Enantioenriched Samples
(MDPI, 2021-06-30)
We wish to draw attention to an important issue concerning scientific practice with regard to enhancing the quality of publications in <i>Molecules</i> (as well as for other journals) [...]
Flurbiprofen: A Study of the Behavior of the Scalemate by Chromatography, Sublimation, and NMR
(MDPI, 2021-03-26)
2-(2-Fluoro-4-biphenyl) propionic acid (flurbiprofen), from the phenylalkanoic acid family of nonsteroidal anti-inflammatory drugs (NSAID’s), is currently on the pharmaceutical market as a racemate. This racemic compound ...
Asymmetric Synthesis of N-Fmoc-(S)-7-aza-tryptophan via Alkylation of Chiral Nucleophilic Glycine Equivalent
(Wiley, 2021-06-07)
Ni(II)-complexes, derived from glycine Schiff bases with chiral tridentate ligands, have been used as powerful tools for the synthesis of structurally diverse tailor-made amino acids. In this manuscript, asymmetric alkylation ...
5-Ethoxy-1-(4-methoxyphenyl)-5-methyl-3-phenylimidazolidine-2,4-dione
(MDPI, 2021-05-28)
The title compound is a hydantoin derivative that has been synthesized through a three-component reaction of ethyl pyruvate, p-anisidine and phenyl isocyanate. This paper provides a comprehensive spectral dataset for the ...
Dynamic Nucleophilic Aromatic Substitution of Tetrazines
(Wiley, 2021-08-23)
A dynamic nucleophilic aromatic substitution of tetrazines (SNTz) is presented herein. It combines all the advantages of dynamic covalent chemistry with the versatility of the tetrazine moiety. Indeed, libraries of compounds ...
Synthesis of β-Hydroxy α-Amino Acids Through Brønsted Base-Catalyzed syn-Selective Direct Aldol Reaction of Schiff Bases of Glycine o-Nitroanilide
(ACS, 2021-05-16)
Here we report the highly enantio- and syn-selective synthesis of β-hydroxy α-amino acids from glycine imine derivatives under Brønsted base (BB) catalysis. The key of this approach is the use of benzophenone-derived imine ...