A facile microwave assisted synthesis and structure elucidation of (3R)-3-alkyl-4,1-benzoxazepine-2,5-diones by crystallographic, spectroscopic and DFT studies - Raza, Abdul Rauf; Nisar, Bushra; Khalid, Muhammad; Gondal, Humaira Yasmeen; Khan, Muhammad Usman; Morais, Sara Figueirêdo de Alcântara; Tahir, Muhammad Nawaz; Braga, Ataualpa Albert Carmo (Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2020)