FloHet 2012
description
Transcript of FloHet 2012
Enhanced Development and Control of
Continuous Processes using
Real Time In Situ FTIR Analytics
Dominique Hebrault, Ph.D.
Gainesville, March 5th 2012
For further conversation…
Many Development & Collaboration Projects
Continuous Chemistry - Analysis Challenges
Chemical information
- Continuous reaction monitoring superior to traditional sampling for offline
analysis (TLC, LCMS, UV, etc.)
→ Stability of reactive intermediates
→ Rapid optimization procedures
Technical knowledge
- Dispersion and diffusion: Side effects of continuous flow – must be
characterized
Today: Limited availability of convenient,
specific, in-line monitoring techniques
In-Line IR Monitoring
Monitor Chemistry In Situ, Under Reaction Conditions
- Non-destructive
- Hazardous, air sensitive or unstable reaction species (ozonolysis, azides etc)
- Extremes in temperature or pressure
In-Line IR Monitoring
Real-Time Analysis, “Movie” of the reaction
- Track instantaneous concentration changes (trends, endpoint, conversion)
- Minimize time delay in receiving analytical results
In-Line IR Monitoring
Determine Reaction Kinetics, Mechanism and Pathway
- Monitor key species as a function of reaction parameters
- Track changes in structure and functional groups
ReactIRTM Flow Cell: An Analytical Accessory
for Continuous Flow Chemical Processing
Carter, C. F.; Lange, H.; Ley, S. V.; Baxendale, I. R.; Goode, J. G.; Gaunt, N. L.; Wittkamp, B. Org. Res. Proc. Dev. 2010, 14, 393-404
In-Line FTIR Micro Flow Cell in the Laboratory
Internal volume: 10 & 50 ml
Up to 50 bar (725 psi)
-40 → 120ºC
Wetted parts: HC276, Diamond, (Silicon) & Gold
Multiplexing
Spectral range 600-4000 cm-1
FlowIR: Flow chemistry and beyond…
Internal volume: 10 & 50 ml
Up to 50 bar (725 psi)
-40 → 120ºC
Spectral range 600-4000 cm-1
FlowIRTM: A New Plug-and-Play
Instrument for Flow Chemistry and
Beyond
9-bounce ATR sensor
(SiComp, DiComp) and head
Small size, no purge, no
alignment, no liquid N2
The Development of Continuous Process for Alkene Ozonolysis Based
on Combined in Situ FTIR, Calorimetry, and Computational Chemistry
A Visual Method to Optimize Reaction Conditions: Case study on a
Doebner Modification of Knoevenagel Reaction
Agenda
The Development of Continuous Process
for Alkene Ozonolysis Based on
Combined in Situ FTIR, Calorimetry, and
Computational Chemistry
Introduction
Continuous reaction setup for ozonolysis
reactions
Instantaneous “view” of the chemistry
using in situ FTIR
Investigation resulted in 2.7kg production
of API intermediate in 2 weeks
In Situ Monitoring for Continuous Manufacturing of APIs
Ayman D. Allian, Steve M. Richter, Jeffrey M. Kallemeyn, Timothy A. Robbins, and Vimal Kishore, Abbott, Process Research and Development, 1401
Sheridan Road, North Chicago, Illinois 60064, USA, Organic Process Research and Development, 2011, 15, 91-97
Steady state, rate, intermediates
Residence time (flow rate, reactor size)
O3 efficiency, mass transfer Styrene
-50°C
In Situ Monitoring for Continuous Manufacturing of API
Ayman D. Allian, Steve M. Richter, Jeffrey M. Kallemeyn, Timothy A. Robbins, and Vimal Kishore, Abbott, Process Research and Development, 1401
Sheridan Road, North Chicago, Illinois 60064, USA, Organic Process Research and Development, 2011, 15, 91-97
xxx
(37 mmol/ sec, 2L/min)
Feed rate limited
FTIR 780 cm-1
Results
Initial lab scale kinetic study in 100ml batch
Challenges
Ozonolysis highly efficient and selective
oxidation method
Hazardous and unreliable in batch
manufacturing: Exotherm, stability of
intermediates, ozone toxicity
Styrene / MeOH / DCM
-50°C
In Situ Monitoring for Continuous Manufacturing of API
Ayman D. Allian, Steve M. Richter, Jeffrey M. Kallemeyn, Timothy A. Robbins, and Vimal Kishore, Abbott, Process Research and Development, 1401
Sheridan Road, North Chicago, Illinois 60064, USA, Organic Process Research and Development, 2011, 15, 91-97
Results
100mL batch vessel retrofitted with
overflow valve → CSTR
Residence time distribution experiment
FTIR data confirmed by off-line HPLC
Results
Oxidation of an isobutylene-type API
intermediate
300g prod., 4d, 12h/d, 81% isol. yield
One week lead time
(Residence time distribution experiment)
Acetone (/heptane)
Rate is O3 feed-controlled
2L/min
In Situ Monitoring for Continuous Manufacturing of API
Ayman D. Allian, Steve M. Richter, Jeffrey M. Kallemeyn, Timothy A. Robbins, and Vimal Kishore, Abbott, Process Research and Development, 1401
Sheridan Road, North Chicago, Illinois 60064, USA, Organic Process Research and Development, 2011, 15, 91-97
Results
Jacketed bubble reactor setup
32g/h – O3 generation
Applied to styrene, isobutylene-type API
intermediate
Made 2.7kg ketone, 4d, 9h/d, rate: 80g/h
2-week lead time
Conversion 99%, O3 efficiency ≈ 85%
ReactIRTM probe
Coarse frit
17L/min
-33°C
In Situ Monitoring for Continuous Manufacturing of API
Ayman D. Allian, Steve M. Richter, Jeffrey M. Kallemeyn, Timothy A. Robbins, and Vimal Kishore, Abbott, Process Research and Development, 1401
Sheridan Road, North Chicago, Illinois 60064, USA, Organic Process Research and Development, 2011, 15, 91-97
Styrene / O3 equimolar:
Steady state 15-20% styrene
In Situ Monitoring for Continuous Manufacturing of API
Ayman D. Allian, Steve M. Richter, Jeffrey M. Kallemeyn, Timothy A. Robbins, and Vimal Kishore, Abbott, Process Research and Development, 1401
Sheridan Road, North Chicago, Illinois 60064, USA, Organic Process Research and Development, 2011, 15, 91-97
in situ FTIR allowed to
Monitor reaction progress, detect
process upsets in real time
Ensure highest degree of product quality
and yield
Eliminate need for sampling and offline
analyses → improved productivity and
safety
Outcome
Preliminary kinetic investigation in batch
Small scale CSTR for 300g production
Larger scale continuous bubble reactor
setup for 2.7kg
The Development of Continuous Process for Alkene Ozonolysis Based
on Combined in Situ FTIR, Calorimetry, and Computational Chemistry
A Visual Method to Optimize Reaction Conditions: Case study on a
Doebner Modification of Knoevenagel Reaction
Agenda
Optimization of a Doebner Modification of
Knoevenagel Reaction in a Continuous
Mode
Introduction
Can reaction optimization and conditions
screening be conducted inline?
How does dispersion affect fraction
collection?
A visual method to optimize reaction conditions
Vapourtec – Flow Chemistry Solutions – Mettler Toledo collaboration project, U.K. 2011, White Paper under review
On-the-fly reaction optimization with
inline FTIR analytics
Vapourtec R2+/R4
FlowIRTM
Results
Reference spectra of 4 main components
3 main/unique bands
7 reaction “plugs”, on-the-fly variation of
residence time and temperature (1:1.1)
Few hours experiment only
Ongoing further investigation
A visual method to optimize reaction conditions
Malonic
Acid
(1729cm-1)
Benzaldehyde
(828cm-1)
Cinnamic acid
(772cm-1)
Vapourtec – Flow Chemistry Solutions – Mettler Toledo collaboration project, U.K. 2011, White Paper under review
80°C, 10’
100°C, 10’
120°C, 20’
120°C, 10’ 100°C, 20’ 100°C, 30’
150°C, 10’
Acknowledgements
Abbott, Process Research and Development (USA)
- Ayman D. Allian*, Steve M. Richter, Jeffrey M. Kallemeyn, Timothy A.
Robbins, and Vimal Kishore
Vapourtec Ltd. (U.K.)
- Chris Butters and Duncan Guthrie
Flow Chemistry Solutions (U.K.)
- Andrew Mansfield
Mettler Toledo Autochem
- Will Kowalchyk (USA)
- Jon Goode (U.K.)
Email us at [email protected]
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