فهرس المقالات trifluoroacetic acid catalyst حرية الوصول المقاله صفحة الملخص نص كامل 1 - Trifluoroacetate-bonded polyethylene graphene oxide composite as a novel and efficient catalyst for the synthesis of benzimidazoles under solvent-free conditions Esmael Rostami Seyed Mahdi Haghayeghi
