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

OBJECTIVES: This study examined whether exposure to chronic loneliness is associated with a persistent decline in hand grip strength among community-dwelling older adults in Korea, and this association varies by gender. METHODS: This study analyzed data from 2,570 adults aged 65 or older collected over the course of 7 waves (12 years) of the Korean Longitudinal Study of Ageing from 2006 to 2018 (1,403 women and 1,167 men). Exposure to chronic loneliness was assessed by the experience of loneline

OBJECTIVES: Uncertainty about receiving care and assistance in the future has been increasing among older adults in Korea. This study examines whether expectations about receiving care from various sources (i.e., formal and/or filial caregivers) are related to life satisfaction among older adults in Korea. METHODS: Using data from the Korean Longitudinal Study of Ageing (N = 3,607, aged 65 or older), this study estimated fixed effects regression models to investigate longitudinal within-person a

Objectives This study investigates the cognitive function trajectories associated with prolonged social isolation, while distinguishing between a lack of informal social contact and a lack of formal social activity as the source of social isolation.Methods Data from the Korean Longitudinal Study of Ageing spanning 12 years between 2006 and 2018 were analyzed. A lack of frequent informal social contact or formal social activity was used to assess social isolation, and cognitive function was measu

Objectives: This study examined whether homeownership is associated with life satisfaction and depressive symptoms among older adults aged 65 or over and whether these associations differ by gender. This study further distinguished mortgagors from owner-occupiers. Methods: Using six waves of the Korean Longitudinal Study of Ageing ( N = 3540), we used generalized estimating equations as well as random- and fixed-effects regression analyses. Results: Gender-stratified fixed-effects models showed