Dan Lehnherr, Longrui Chen, François Lévesque, Christopher Nietupski, Mark Weisel, Velabo Mdluli, Keith Mattern, Brittany M. Armstrong, Tao Chen, Ryan D. Cohen
{"title":"Scalable Flow Electrosynthesis of Iminophosphoranes","authors":"Dan Lehnherr, Longrui Chen, François Lévesque, Christopher Nietupski, Mark Weisel, Velabo Mdluli, Keith Mattern, Brittany M. Armstrong, Tao Chen, Ryan D. Cohen","doi":"10.1021/acs.oprd.4c00372","DOIUrl":null,"url":null,"abstract":"A scalable electrochemical process to synthesize iminophosphorane ligands is reported. The application of these iminophosphoranes was recently reported in Ni-catalyzed cross-electrophile and C–N cross-couplings. The use of parallel plate flow electrochemical reactors enables the synthesis of these iminophosphorane ligands on a multigram scale, with selected examples reported on up to 0.6 kg scale. Direct crystallization from the end of reaction mixture for selected ligands provides facile isolation processes. This article also details improvements in our electrochemical capabilities across scales, including addressing material compatibility issues, increasing accessible range of flow rates, and integration of process analytical technology tools.","PeriodicalId":55,"journal":{"name":"Organic Process Research & Development","volume":"2 1","pages":""},"PeriodicalIF":3.1000,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Organic Process Research & Development","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1021/acs.oprd.4c00372","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
A scalable electrochemical process to synthesize iminophosphorane ligands is reported. The application of these iminophosphoranes was recently reported in Ni-catalyzed cross-electrophile and C–N cross-couplings. The use of parallel plate flow electrochemical reactors enables the synthesis of these iminophosphorane ligands on a multigram scale, with selected examples reported on up to 0.6 kg scale. Direct crystallization from the end of reaction mixture for selected ligands provides facile isolation processes. This article also details improvements in our electrochemical capabilities across scales, including addressing material compatibility issues, increasing accessible range of flow rates, and integration of process analytical technology tools.
期刊介绍:
The journal Organic Process Research & Development serves as a communication tool between industrial chemists and chemists working in universities and research institutes. As such, it reports original work from the broad field of industrial process chemistry but also presents academic results that are relevant, or potentially relevant, to industrial applications. Process chemistry is the science that enables the safe, environmentally benign and ultimately economical manufacturing of organic compounds that are required in larger amounts to help address the needs of society. Consequently, the Journal encompasses every aspect of organic chemistry, including all aspects of catalysis, synthetic methodology development and synthetic strategy exploration, but also includes aspects from analytical and solid-state chemistry and chemical engineering, such as work-up tools,process safety, or flow-chemistry. The goal of development and optimization of chemical reactions and processes is their transfer to a larger scale; original work describing such studies and the actual implementation on scale is highly relevant to the journal. However, studies on new developments from either industry, research institutes or academia that have not yet been demonstrated on scale, but where an industrial utility can be expected and where the study has addressed important prerequisites for a scale-up and has given confidence into the reliability and practicality of the chemistry, also serve the mission of OPR&D as a communication tool between the different contributors to the field.