CERTAIN CASES OF o-ALKOXYCINNAMIC ACIDS CREATION FROM COUMARINS IN O-ALKYLATION CONDITION: DOI: https://doi.org/10.17721/1728-2209.2019.1(56).6. (2019). Bulletin of the Taras Shevchenko National University of Kyiv. Chemistry, 56(1), 25-30. https://chemistry.bulletin.knu.ua/article/view/8362