In-Cage Recombination Facilitates the Enantioselective Organocatalytic [1,2]-Rearrangement of Allylic Ammonium Ylides.

The [1,2]-rearrangement of allylic ammonium ylides is traditionally observed as a competitive minor pathway alongside the thermally allowed [2,3]-sigmatropic rearrangement. Concerted [1,2]-rearrangements are formally forbidden, with these processes believed to proceed through homolytic C-N bond fission of the ylide, followed by radical-radical recombination. The challenges associated with developing a catalytic enantioselective [1,2]-rearrangement of allylic ammonium ylides therefore lie in biasing the reaction pathway to favor the [1,2]-reaction product, alongside controlling a stereoselective radical-radical recombination event.

Development of a job-exposure matrix-like exposure assessment method for the US general population based on Occupational Information Network (O*NET) job tasks.

Background: Job-exposure matrices (JEMs) are often used for exposure assessment in occupational exposure and epidemiology studies. However, general population JEMs are difficult to find and access for workers in the United States of America.

Objective: We aimed to use publicly available information to develop a JEM-like exposure assessment method to determine exposure to a wide range of occupational agents in a wide range of occupations for US general population studies.

Gerontology, Art, and Activism: Can the Intersection of Art, Social Research, and Community Power Lead to Lasting Change?

This paper seeks to address the question of what gerontologists and humanities scholars can learn from how their respective fields engage with critical issues of age-based intersectional disadvantage, inequality, colonialism, and exclusion. The paper considers the Uncertain Futures Project, a participatory arts-led social research study based in Manchester, United Kingdom. The project explores the inequalities of women over 50 regarding issues of work using an intersectional lens.