Enhanced Controllability of Fries Rearrangements Using High-Resolution 3D-Printed Metal Microreactor with Circular Channel
- Authors
- Lee, Hyune-Jea; Roberts, Robert C.; Im, Do Jin; Yim, Se-Jun; Kim, Heejin; Kim, Ji Tae; Kim, Dong-Pyo
- Issue Date
- 13-12월-2019
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- 3D print; flow chemistry; Fries rearrangement; microreactors; reactive intermediates
- Citation
- SMALL, v.15, no.50
- Indexed
- SCIE
SCOPUS
- Journal Title
- SMALL
- Volume
- 15
- Number
- 50
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/60924
- DOI
- 10.1002/smll.201905005
- ISSN
- 1613-6810
- Abstract
- High-resolution 3D-printed stainless steel metal microreactors (3D-PMRs) with different cross-sectional geometry are fabricated to control ultrafast intramolecular rearrangement reactions in a comparative manner. The 3D-PMR with circular channel demonstrates the improved controllability in rapid Fries-type rearrangement reactions, because of the superior mixing efficiency to rectangular cross-section channels (250 mu m x 125 mu m) which is confirmed based on the computational flow dynamics simulation. Even in case of very rapid intramolecular rearrangement of sterically small acetyl group occurring in 333 mu s of reaction time, the desired intermolecular reaction can outpace to the undesired intramolecular rearrangement using 3D-PMR to result in high conversion and yield.
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