RESUMEN
Herein we report the WO2Dipic(H2O) promoted oxyamination of alkenes using sulfonamides as the quantitative source of N. The reaction works for activated and unactivated alkenes in high yields, diastereoselectivities, and stereospecificity. A catalytic cycle involving the formation of tungstenooxaziridine complex 1 as the active catalyst and hydrolysis of tungstenooxazolidine intermediate A as the rate-determining-step has been proposed. Initial kinetic and competition experiments provide evidence for the proposed mechanism.
RESUMEN
Herein, we report the catalytic allylic amination of α-methylalkenes with V2O3Dipic2(HMPA)2 and chloramine T as the quantitative source of N. The reaction works with high yields and stereoselectivities for α-methylalkenes. A proposed tosylnitrene-free catalytic cycle involving the formation of vanadoxaziridine complex 1 as the active catalyst and aminovanadation across the substrate as the rate-determining step has been proposed. Initial kinetic and competition experiments provide evidence for the proposed mechanism.
RESUMEN
This study presents data from an online course on Latinx Students in Higher Education taught at a Predominantly White Institution in the Midwest. This case study examines how students engage with content on Latinx issues across the P-20 educational pipeline to better understand and ultimately serve this population in their professional context using perspectives on allyship development and racial justice allyship. Students in the course demonstrated a commitment to social justice, but their journey to build allyship was not a straightforward process.