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A Dangerous Bromance

The introduction of bromine into intermediates is a key transformation in the synthesis of pharmaceuticals and other high value materials, due to the reactivity and selectivity it offers for further transformation, over for example the generally cheaper, more common but less reactive chlorinated analogues. Bromine is commonly introduced by one of three reagents: bromine itself

Singing in the Rain- Removing Residual Lithium Salts From Flow Reactors Under Anhydrous Conditions

Organolithium reagents are powerful and ubiquitous intermediates used extensively in synthetic chemistry both in academic and industrial settings. The stability of these reagents often necessitates generation and rapid processing at cryogenic temperatures: some organolithium species are chemically or configurationally unstable at temperatures above -100°C. An example is the dichloromethyllithium anion generated during the Mattison homologation

Per-and Polyfluorinated Alkyl (PFAS) Substances: Ubique Perpetuum

In December 2023 Nick Tyrell from ALMAC gave an interesting and timely presentation at our Winer Process Chemistry Conference in Liverpool, UK on the proposed EU ban of all per– and poly-fluorinated materials, including polymers and the fluorinating reagents we use routinely to introduce fluorine or fluorine-containing functional groups into complex molecules. The details of

Chemical Development and Scale Up

We spoke to chemists at different stages of their careers about their experiences of attending our ‘Chemical Development and Scale Up in the Fine Chemical and Pharmaceutical Industries’ training course. Ben Littler  Ben told us that he had taken the ‘Chem Dev’ course twice as an early career process chemist!  Both courses were held as

The Importance of Mentors and Teachers 

In my previous blog I referred to changes in learning models for industrial chemists described in an editorial in the Journal of Medicinal Chemistry by Dean G. Brown on ‘Adapting to the Changing Landscape of Biotech-Driven Drug Discovery’ (DOI: 10.1021/acs.jmedchem.3c02035) that I discovered through Derek Lowe’s ‘In The Pipeline’ blog titled ‘The Current Industry Landscape’

Changing Models for Training Industrial Chemists 

Derek Lowe’s ‘In The Pipeline’ blog titled ‘The Current Industry Landscape’ on 27 Nov 2023 alerted me to an excellent overview editorial in the Journal of Medicinal Chemistry by Dean G. Brown on ‘Adapting to the Changing Landscape of Biotech-Driven Drug Discovery’ (DOI: 10.1021/acs.jmedchem.3c02035). One thing that struck me as I read both the blog

How do you Safely Scale up a Given Chemical Reaction?

If you are working in industry and are responsible for safety, how do you safely scale up a given chemical reaction? How do you tackle issues like heat transfer, gas release, exposure control, waste stream issues and more? The core of any process safety study is a correct description of both heat and gas release

Safety and Scale-Up

When I first started working as an industrial process chemist one of my more experienced colleagues told me that you can only really know how well a process performs until you run it on at least a 5 kg scale. I found that to be good advice but as I developed my skills in the

Two New Reactor Types for Rapid Electrochemistry Scale-Up

The resurgence of electrochemistry in medicinal chemistry laboratories has created the demand for the rapid delivery of up to a few kilograms of material by the same methods in order to quickly evaluate whether the candidate molecule is a viable clinical candidate or not. Electrochemical processes have been successfully scaled up to commercial scale using

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