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Design of a highly efficient catalyst for the oxaziridinium-mediated epoxidation of olefins by Oxone®


07 Nov 2020

Synthesis works, but yields can be difficult to achieve.

As th electronegativity of the R-groups on the catalyst increases, yields tended to drop below reported values. While annoying, the purity of the finale compound was excellent. 

On a more positive note, the route proposed in this publication can be easily...

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Paractamol or Aspirin?


18 Feb 2021

1st Review

Response letter from reader suggesting their is now clinical evidence for salicylates casuing GI mucosa erosion and eventual bleeding.

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Selective Bromination of Perylene Diimides under Mild Conditions


09 Dec 2016

Good experimental, some modification to work-up

In this paper, selective bromination of perylene diimides is described. I was able to reproduce the bromination of 1a. However, the workup involves evaporating large volumes of bromine. I was able to isolate similar yields of products by quenching the...

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Three new mononuclear group 12 complexes with benzimidazole


15 Dec 2016

Reproducible but very routine work

Summary:

This paper describes the synthesis of three iso-structural Zn(II), Cd(II), and Hg(II) complexes with 1-benzyl-2-phenyl-1H-benzimidazole (BPB). Single crystal X-ray determination of CdBPB and HgBPB were done along with Structural analysis of ZnBPB...

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Selective quenching of benzimidazole derivatives by Cu2+ metal ion


01 Jan 2017

Many details omitted which makes it clumsy to repeat

Summary:

This paper reports the binding effect of some novel benzimidazole derivatives with Cu2+ metal ion by solution spectral studies. Benzimidazole complexes (16) were studied for fluorescence quenching by Cu2+ in comparison to Fe3+, Mg2+, Ag+, K+...

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Synthesis and in Vitro Anti-Tumor Activity of A New Class of Acyclic Thioglycosides


31 Jan 2017

Innovative approach - Lower yields

Summary:

This paper reports the synthesis of a new class of acrylamide thioglycoside derivatives utilizing a one-pot synthesis. Further heating of the resultant glycosides with hydrazine is reported to give pyrazole derivatives. Among those synthesized,...

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Site-directed ligand discovery


31 Jan 2021

Important contribution to fragment hit-finding technologies

This paper by Erlanson and colleagues describes the disulfide tethering technique, which has proven to be a reproducible and versatile method for finding fragment hits. The main advance is the covalent targeting of the fragment library to a specific site on a...

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Accelerating scientific publication in biology


03 Feb 2021

An important analysis of today's publication trends

A detailed observational study of the trends in biological sciences publishing, including analysis of time-to-publication, time-to-graduation, and the increasing minimum publication unit. The paper is interwoven with thoughtful analysis and perspective from...

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Isolation and reactions of .alpha.-lithio N,N-dimethylacetamide


09 Dec 2016

Reproducible Experimental

Summary: The paper discusses the synthesis, reactivity and stability of α-lithio N,N dimethylacetamide.

The paper described carefully the use of various solvents (pentane, THF) and their impact on the formation of the desired product.

It also described...

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A Convenient Synthesis of Novel Bifunctional Prochelators for Coupling to Bioactive Peptides for Radiometal Labelling


09 Dec 2016

Extremely helpful and reliable paper

 

Summary

The article describes the synthesis of cyclen based chelators which can accommodate and stabilize di-and trivalent metal ions for biomedical applications. The chelators were synthesized first by monoalkylating cyclen (1,4,7,10...

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DIPHENALDEHYDE


09 Dec 2016

Reliable Procedure

The procedure described in this paper is very reliable. The ozone should be used in a fully functional fume hood as described.

1. Synthesized 10.1 g of crude diphenaldehyde starting from 10.0 g of phenanthrene.

2. The crude 1H-NMR of product is 80%...

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Rapid determination of trace level copper in tea infusion samples by solid contact ion selective electrode


22 Dec 2016

Should include Mn & Al data for clarity

Summary:

A new copper selective solid-state electrode based on o-xylylenebis(N,N-diisobutyldithiocarbamate) ionophore has been described. It has been developed for selectively measuring the copper levels found in the tea infusion samples. Robust, cheap...

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Theoretical study of borazine and substituted borazines using density functional theory method


23 Dec 2016

Good theory. Experimental data can add value.

Summary:

This paper describes the theoretical study on borazine and substituted borazines by the means of density functional theory. Amino group was used as the common donor group while four acceptor groups namely –NO2, –C≡N, –COCl and –NMe2 were chosen...

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“On water” organic synthesis: a highly efficient and clean synthesis of 2-aryl/heteroaryl/styryl benzothiazoles and 2-alkyl/aryl alkyl benzothiazolines


01 Jan 2017

Excellent practical method. Highly recommended.

Summary:

A convenient, clean and environmentally benign method for ‘‘on water’’ synthesis of benzothiazoles/benzothiazolines has been described. Although previous methods are available in literature for synthesis of such compounds, the ease of operation,...

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Eco-friendly synthesis of 2-substituted benzothiazoles catalyzed by cetyltrimethyl ammonium bromide (CTAB) in water


18 Feb 2017

Innovative but has errors which affects reproducibility

Summary:

This paper reports a CTAB-catalyzed method developed for the synthesis of 2-substituted benzothiazoles by the condensation of 2-aminothiophenol with aldehydes (RCHO: R = Alkyl, Aryl, Heteroaryl, 2-Arylformyl). Use of cetyltrimethyl ammonium...

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Exploring factors that influence the practice of Open Science by early career health researchers: a mixed methods study


04 Feb 2021

A Useful Survey of Early Career Researchers

Toomey and colleagues report the results of a survey of 14 early career researchers (ECRs) about "open science". On a whole, these ECRs view open science positively, but hold reservations about the impact adopting open science practices might have on their...

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