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Women and many people of color continue to be minoritized in STEM and notably in physics. We conducted two studies demonstrating that exposure to counternarratives about "who does physics" and "why one does physics" significantly increases high school students--especially women's--physics-related career intentions. These counternarratives facilitate making connections with students' career plans and help in sensemaking causes for the continued minoritization of women in physics. Two separate studies measured the impacts of these interventions on students' physics-related career intentions: first, with an intentionally selected group of teachers (10 teachers, 823 students) across regions and contexts in the U.S.; second, with a randomly sampled group of teachers (13 teachers, 1509 students) from three regions that also included a comparable control group. The results clearly show the importance of exposure to counternarratives in the development of high school students' career interests, particularly for women and minoritized racial or ethnic groups, and that such counternarratives may help to address systemic issues of underrepresentation in STEM.

Reported herein is the use of catalytic [{Ir(cod)Cl}2] to facilitate hydrogen-borrowing reactions of ketone enolates with methanol at 65 °C. An oxygen atmosphere accelerates the process, and when combined with the use of a bulky monodentate phosphine ligand, interrupts the catalytic cycle by preventing enone reduction. Subsequent addition of pro-nucleophiles to the reaction mixture allowed a one-pot methylenation/conjugate addition protocol to be developed, which greatly expands the range of products that can be made by this methodology. [ABSTRACT FROM AUTHOR]

Reported herein is the use of catalytic [{Ir(cod)Cl}2] to facilitate hydrogen-borrowing reactions of ketone enolates with methanol at 658C. An oxygen atmosphere accelerates the process, and when combined with the use of a bulky monodentate phosphine ligand, interrupts the catalytic cycle by preventing enone reduction. Subsequent addition of pronucleophiles to the reaction mixture allowed a one-pot methylenation/conjugate addition protocol to be developed, which greatly expands the range of products that can be made by this methodology. [ABSTRACT FROM AUTHOR]

Reported herein is the use of catalytic [{Ir(cod)Cl}2 ] to facilitate hydrogen-borrowing reactions of ketone enolates with methanol at 65 °C. An oxygen atmosphere accelerates the process, and when combined with the use of a bulky monodentate phosphine ligand, interrupts the catalytic cycle by preventing enone reduction. Subsequent addition of pro-nucleophiles to the reaction mixture allowed a one-pot methylenation/conjugate addition protocol to be developed, which greatly expands the range of products that can be made by this methodology., (© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Divergent reactivity is uncovered in the homologation of arylcyclobutanones with trimethylsilyldiazomethane. With Sc(OTf)(3) as catalyst, enolsilanes are obtained with a high preference for methylene migration. By contrast, Sc(hfac)(3) gives beta-ketosilanes with both regio- and diastereocontrol. Each adduct affords the cyclopentanone upon hydrolysis.