2018
DOI: 10.1021/acs.joc.8b02390
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Development of a Commercial Process To Prepare AMG 232 Using a Green Ozonolysis–Pinnick Tandem Transformation

Abstract: A robust process to manufacture AMG 232 was developed to deliver drug substance of high purity. Highlights of the commercial process development efforts include the following: (i) use of a novel bench-stable Vilsmeier reagent, methoxymethylene-N,N-dimethyliminium methyl sulfate, for selective in situ activation of a primary alcohol intermediate; (ii) use of a new crystalline and stable isopropyl calcium sulfinate reagent ensuring robust preparation of a sulfone intermediate; (iii) development of a safe ozonoly… Show more

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Cited by 18 publications
(7 citation statements)
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“…employing ag reen, ozonolysis-Pinnick tandem transformation for the synthesis of ac ancer drug candidate in high purity. [72] Thet andem reaction can be realized in ac ontinuous-flow ozonolysis process in as afe laboratory-scale reactor, [73] and batch-wise processing of complex organic substrates provides the desired carbonyl products on amultigram scale. [74] Thef low ozonolysis reactor setup (Figure 7) is suitable for safe ozonolysis/quenching at atmospheric pressure and À25 8 8Ct or oom temperature,a tf low rates of 0.2-2.0 mL min À1 ,whereas previous flow set-ups required the use of additional quenching reagents.Similarly,anew method for the efficient biphasic ozonolysis of alkenes in EtOAc/H 2 O using ah igh-throughput film-shear flow reactor set up,w ith certain improvements,has recently been developed.…”
Section: Methodsmentioning
confidence: 99%
“…employing ag reen, ozonolysis-Pinnick tandem transformation for the synthesis of ac ancer drug candidate in high purity. [72] Thet andem reaction can be realized in ac ontinuous-flow ozonolysis process in as afe laboratory-scale reactor, [73] and batch-wise processing of complex organic substrates provides the desired carbonyl products on amultigram scale. [74] Thef low ozonolysis reactor setup (Figure 7) is suitable for safe ozonolysis/quenching at atmospheric pressure and À25 8 8Ct or oom temperature,a tf low rates of 0.2-2.0 mL min À1 ,whereas previous flow set-ups required the use of additional quenching reagents.Similarly,anew method for the efficient biphasic ozonolysis of alkenes in EtOAc/H 2 O using ah igh-throughput film-shear flow reactor set up,w ith certain improvements,has recently been developed.…”
Section: Methodsmentioning
confidence: 99%
“…Cochran et al entwickelten einen kommerziellen Prozess unter Verwendung der grünen Ozonolyse-Pinnick-Tandemtransformation fürd ie Synthese eines Krebsmedikamentenkandidaten in hoher Reinheit. [72] Die Tandemreaktion kann füre inen kontinuierlichen Ozonolyseprozess in einem sicheren Reaktor im Labormaßstab realisiert werden, [73] und die chargenweise Verarbeitung komplexer organischer Substrate liefert gewünschte Carbonylprodukte im Multigramm-Maßstab. [74] Der Durchfluss-Ozonolyse-Re-aktoraufbau (Abbildung 7, oben) eignet sich füre ine sichere Ozonolyse mit anschließendem Quenchen bei Atmosphärendruck und von À25 8 8Cb is Raumtemperatur bei Durchflussraten von 0,2-2,0 mL min À1 ,w ährend frühere Durchflussreaktoren die Verwendung zusätzlicher Quench-Reagenzien erforderten.…”
Section: Fortschrittliche Methoden Und Reaktordesign Zur Ausnutzung Von Cis In Synthese Und Materialmodulationunclassified
“…Cochran et al. entwickelten einen kommerziellen Prozess unter Verwendung der grünen Ozonolyse‐Pinnick‐Tandemtransformation für die Synthese eines Krebsmedikamentenkandidaten in hoher Reinheit [72] . Die Tandemreaktion kann für einen kontinuierlichen Ozonolyseprozess in einem sicheren Reaktor im Labormaßstab realisiert werden, [73] und die chargenweise Verarbeitung komplexer organischer Substrate liefert gewünschte Carbonylprodukte im Multigramm‐Maßstab [74] .…”
Section: Syntheseanwendungen Von Cisunclassified
“…1000 times higher than the liquid one . To synthesize the oncologically relevant AMG232, an ozonolysis–Pinnick tandem transformation was carried out in a CSTR setup using 2 equivalents of ozone . Increasing the productivity using a high ozone flow rate (285 g/h) led to high conversion but decreased the selectivity.…”
Section: Introductionmentioning
confidence: 99%