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Iron-Based Tandem Catalysis: From Petroleum toward Pharmaceutical Laboratories for Organic Undergraduate Students─Product Identification by TLC and ¹ H NMR

https://doi.org/10.1021/acs.jchemed.2c00451

Smith, Lisa; Udayanga, D. M.; Qian, Xiaolin; Adams, Lauren; Sims, Sarah; Nettles, Charles; Xu, Xue; Cui, Xin; Mlsna, Deb (September 2022, Journal of Chemical Education)

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Catalytic Amidomethylative [2+2+2] Cycloaddition of Formaldimine and Styrenes toward N-Heterocycles

https://doi.org/10.1055/a-1710-7256

Chaminda Lakmal, Hetti Handi; Istre, Jacob; Qian, Xiaolin; Zhou, Hui; Valle, Henry U.; Xu, Xue; Cui, Xin (April 2022, Synthesis)

Abstract Chemo-switchable catalytic [2+2+2] cycloaddition of alkenes with formaldimines is reported. Bis(tosylamido)methane (BTM) and 1,2-ditosyl-1,2-diazetidine (DTD), two bench-stable precursors for highly reactive tosylformaldimine, have been identified to be effective. BTM worked as a selective releaser of the formaldimine for catalytic [2+2+2] reactions toward hexahydropyrimidine products via a presumable ‘imine–alkene–imine’ addition. A unique catalytic retro-[2+2] reaction of DTD was used and has enabled a proposed ‘imine–alkene–alkene’ pathway with high chemoselectivity for the synthesis of 2,4-diarylpiperidine derivatives. The two alternative processes are catalyzed by the simple and environmentally benign catalysts InCl3 and FeBr2, respectively.
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Fe(III)-Based Tandem Catalysis for Amidomethylative Multiple Substitution Reactions of α-Substituted Styrene Derivatives

https://doi.org/10.1021/acscatal.0c02676

Qian, Xiaolin; Zhou, Hui; Chaminda Lakmal, Hetti Handi; Lucore, James; Wang, Xuesong; Valle, Henry U.; Donnadieu, Bruno; Xu, Xue; Cui, Xin (September 2020, ACS Catalysis)
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Assessment of scientific gaps related to the effective environmental management of deep-seabed mining

https://doi.org/10.1016/j.marpol.2022.105006

Amon, Diva J.; Gollner, Sabine; Morato, Telmo; Smith, Craig R.; Chen, Chong; Christiansen, Sabine; Currie, Bronwen; Drazen, Jeffrey C.; Fukushima, Tomohiko; Gianni, Matthew; et al (April 2022, Marine Policy)

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