Jinho Kim

Cu-catalyzed aerobic oxidative three-component coupling of a terminal alkyne, secondary amine, and sulfonamide enables efficient synthesis of amidines. The use of Cu(OTf)2 (5 mol %) produces amidines selectively without Glaser-Hay alkyne homocoupling products. Preliminary studies suggest that the reaction pathway involves initial oxidative coupling of the terminal alkyne with the secondary amine, followed by hydroamidation of the ynamine intermediate with the sulfonamide.

Students' sense of social relatedness at school predicts health and well-being throughout life. However, little is known about whether observed associations reflect unobserved family background factors and whether these associations differ between student-student and student-teacher relationships. Using data from the National Longitudinal Study of Adolescent to Adult Health, this study examined whether student-student and student-teacher relationships are differentially associated with adult hea

Despite scholarly consensus on the positive influence of peers’ parental education on students’ academic achievement, less is known about whether marginalized students reap similar benefits as their nonmarginalized counterparts. Using data from the China Educational Panel Survey and a quasi-experimental design, we show that the impact of classmates’ parental education on test scores is significantly stronger for local students than for migrant students in urban schools. These differential effect

Chronic loneliness impairs the physical health of older adults in the long run. These physical health consequences of chronic loneliness were more pronounced among older men than older women. The study's findings inform the development of interventions that mitigate the adverse health consequences of chronic loneliness.

Reducing uncertainty about future care may improve older adults' subjective well-being. Policymakers may consider policies and programs that support family care of the aged, and more fundamentally, encourage family involvement in the lives of older people.

Prolonged social isolation, particularly a lack of formal social activity, can pose a significant threat to the cognitive health of older adults.

This article examines the effect of delinquent peers on an individual's criminal activity by leveraging quasi-experimental variation in exposure to peers, separating confounding and causal effects. In particular, we examine the role of wider peer networks (i.e., classmates) as a critical source of influence on adolescents' delinquent behavior. Using a combined instrumental variables/fixed effects methodology, we address important methodological challenges in estimating peer effects. Results sugg

Disability has a negative association with engagement in socializing and leisure activities and a positive association with engagement in volunteer activities. Policymakers should consider the role of SES in complicating the relationship between disability and social participation.