title: Palladium-Catalyzed Annulation of Internal Alkynes: Direct Access to π-Conjugated Ullazines.
abstract: A palladium-catalyzed cyclization reaction of 1-(2,6-dibromophenyl)-1H-pyrroles with alkynes has been developed to construct various π-conjugated indolizino[6,5,4,3-ija]quinolones (ullazines) with a reactive functional group tolerance. As illustrative examples, three new ullazine-based sensitizers are synthesized, and the performance of these dyes is examined in DSSC devices, which demonstrates the potential of direct C-H functionalization in the construction of organic optoelectronic materials.
authors.affiliation: Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, and State Key Laboratory of Biotherapy, West China Medical School, Sichuan University , 29 Wangjiang Road, Chengdu 610064, P. R. China.
authors.forename: Danyang
authors.initials: D
authors.lastname: Wan
authors.affiliation: Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, and State Key Laboratory of Biotherapy, West China Medical School, Sichuan University , 29 Wangjiang Road, Chengdu 610064, P. R. China.
authors.forename: Xiaoyu
authors.initials: X
authors.lastname: Li
authors.affiliation: Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, and State Key Laboratory of Biotherapy, West China Medical School, Sichuan University , 29 Wangjiang Road, Chengdu 610064, P. R. China.
authors.forename: Ruyong
authors.initials: R
authors.lastname: Jiang
authors.affiliation: Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, and State Key Laboratory of Biotherapy, West China Medical School, Sichuan University , 29 Wangjiang Road, Chengdu 610064, P. R. China.
authors.forename: Boya
authors.initials: B
authors.lastname: Feng
authors.affiliation: Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, and State Key Laboratory of Biotherapy, West China Medical School, Sichuan University , 29 Wangjiang Road, Chengdu 610064, P. R. China.
authors.forename: Jingbo
authors.initials: J
authors.lastname: Lan
authors.affiliation: College of Materials Science and Engineering, Sichuan University , 29 Wangjiang Road, Chengdu 610064, P. R. China.
authors.forename: Ruilin
authors.initials: R
authors.lastname: Wang
authors.affiliation: Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, and State Key Laboratory of Biotherapy, West China Medical School, Sichuan University , 29 Wangjiang Road, Chengdu 610064, P. R. China.
authors.forename: Jingsong
authors.initials: J
authors.lastname: You