Continuous Flow Optimisation of the Pudovik Reaction and Phospha-Brook Rearrangement Using DBN

Flow chemistry has shown significant versatility over the last two decades, offering advantages in efficiency, scalability, and sustainability. In this study, the continuous stirred tank reactor (CSTR) was used to optimise the synthesis of α-hydroxyphosphonates via the Pudovik reaction and their sub...

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Main Authors: Joseph Dean, Natalia Buckler Reinoso, Francesco Spiedo, Carola Romero Fernández, Bhaven Patel
Format: Article
Language:English
Published: MDPI AG 2024-11-01
Series:Reactions
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Online Access:https://www.mdpi.com/2624-781X/5/4/42
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author Joseph Dean
Natalia Buckler Reinoso
Francesco Spiedo
Carola Romero Fernández
Bhaven Patel
author_facet Joseph Dean
Natalia Buckler Reinoso
Francesco Spiedo
Carola Romero Fernández
Bhaven Patel
author_sort Joseph Dean
collection DOAJ
description Flow chemistry has shown significant versatility over the last two decades, offering advantages in efficiency, scalability, and sustainability. In this study, the continuous stirred tank reactor (CSTR) was used to optimise the synthesis of α-hydroxyphosphonates via the Pudovik reaction and their subsequent conversion to phosphates through the phospha-Brook rearrangement. The study highlights that using CSTRs allows for better control over reaction parameters, leading to reduced reaction times and improved yields compared to traditional batch methods. The optimised conditions successfully facilitated a range of organophosphates, including electron-rich and electron-poor derivatives, with high efficiency. Additionally, a one-pot tandem process combining the Pudovik reaction and the phospha-Brook rearrangement was developed, reducing reaction times to two hours while maintaining comparable yields. This work demonstrates the potential of CSTRs in flow chemistry for synthesising complex organophosphorus compounds, achieving higher reaction yields and shorter reaction times, highlighting the effectiveness of continuous flow methodologies.
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spelling doaj-art-dd23e53ca76247468d0564d891ee28d72024-12-27T14:49:59ZengMDPI AGReactions2624-781X2024-11-015481282210.3390/reactions5040042Continuous Flow Optimisation of the Pudovik Reaction and Phospha-Brook Rearrangement Using DBNJoseph Dean0Natalia Buckler Reinoso1Francesco Spiedo2Carola Romero Fernández3Bhaven Patel4Applied Chemistry & Pharmaceutical Technology (ADAPT), School of Human Sciences, London Metropolitan University, London N7 8DB, UKApplied Chemistry & Pharmaceutical Technology (ADAPT), School of Human Sciences, London Metropolitan University, London N7 8DB, UKApplied Chemistry & Pharmaceutical Technology (ADAPT), School of Human Sciences, London Metropolitan University, London N7 8DB, UKApplied Chemistry & Pharmaceutical Technology (ADAPT), School of Human Sciences, London Metropolitan University, London N7 8DB, UKApplied Chemistry & Pharmaceutical Technology (ADAPT), School of Human Sciences, London Metropolitan University, London N7 8DB, UKFlow chemistry has shown significant versatility over the last two decades, offering advantages in efficiency, scalability, and sustainability. In this study, the continuous stirred tank reactor (CSTR) was used to optimise the synthesis of α-hydroxyphosphonates via the Pudovik reaction and their subsequent conversion to phosphates through the phospha-Brook rearrangement. The study highlights that using CSTRs allows for better control over reaction parameters, leading to reduced reaction times and improved yields compared to traditional batch methods. The optimised conditions successfully facilitated a range of organophosphates, including electron-rich and electron-poor derivatives, with high efficiency. Additionally, a one-pot tandem process combining the Pudovik reaction and the phospha-Brook rearrangement was developed, reducing reaction times to two hours while maintaining comparable yields. This work demonstrates the potential of CSTRs in flow chemistry for synthesising complex organophosphorus compounds, achieving higher reaction yields and shorter reaction times, highlighting the effectiveness of continuous flow methodologies.https://www.mdpi.com/2624-781X/5/4/42continuous flowPudovik reactionphospha-Brook rearrangementα-hydroxyphosphonatesphosphates1,5-diazabicyclo(4.3.0)non-5-ene
spellingShingle Joseph Dean
Natalia Buckler Reinoso
Francesco Spiedo
Carola Romero Fernández
Bhaven Patel
Continuous Flow Optimisation of the Pudovik Reaction and Phospha-Brook Rearrangement Using DBN
Reactions
continuous flow
Pudovik reaction
phospha-Brook rearrangement
α-hydroxyphosphonates
phosphates
1,5-diazabicyclo(4.3.0)non-5-ene
title Continuous Flow Optimisation of the Pudovik Reaction and Phospha-Brook Rearrangement Using DBN
title_full Continuous Flow Optimisation of the Pudovik Reaction and Phospha-Brook Rearrangement Using DBN
title_fullStr Continuous Flow Optimisation of the Pudovik Reaction and Phospha-Brook Rearrangement Using DBN
title_full_unstemmed Continuous Flow Optimisation of the Pudovik Reaction and Phospha-Brook Rearrangement Using DBN
title_short Continuous Flow Optimisation of the Pudovik Reaction and Phospha-Brook Rearrangement Using DBN
title_sort continuous flow optimisation of the pudovik reaction and phospha brook rearrangement using dbn
topic continuous flow
Pudovik reaction
phospha-Brook rearrangement
α-hydroxyphosphonates
phosphates
1,5-diazabicyclo(4.3.0)non-5-ene
url https://www.mdpi.com/2624-781X/5/4/42
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AT francescospiedo continuousflowoptimisationofthepudovikreactionandphosphabrookrearrangementusingdbn
AT carolaromerofernandez continuousflowoptimisationofthepudovikreactionandphosphabrookrearrangementusingdbn
AT bhavenpatel continuousflowoptimisationofthepudovikreactionandphosphabrookrearrangementusingdbn