Synthesis of Benzoxazoles, Benzimidazoles, and Benzothiazoles Using a Brønsted Acidic Ionic Liquid Gel as an Efficient Heterogeneous Catalyst under a Solvent-Free Condition - The Thai Nguyen; Xuan-Trang Thi Nguyen; Thuy-Linh Ho Nguyen; Phuong Hoang Tran (ACS Omega, 2019)