id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
eurjchem-1732	Rahman, Mohammad Saidur; Alam, Sayeda Shakila; Happy, Kamrunnahar; Hossain, Mohammad Mamun; Islam, Mohammad Khademul; Biswas, Foni Bushon	Eco-friendly and simple synthesis of some non-natural flavones through chalcones	2018	5	.pdf	application/pdf	4834	348	73	http://dx.doi.org/10.5155/eurjchem.9.3.236-240.1732 http://dx.doi.org/10.5155/eurjchem.9.3.236-240.1732 https://crossmark.crossref.org/dialog/?doi=10.5155/eurjchem.9.3.236-240.1732&domain=pdf&date_stamp=2018-09-30 http://www.eurjchem.com/ http://dx.doi.org/10.5155/eurjchem.9.3.236-240.1732 mailto:saidur1434ju@yahoo.com mailto:chemshakila@gmail.com mailto:k.happy_ju@yahoo.com mailto:chemmamun2@yahoo.com mailto:dr.islam.mbstu@gmail.com mailto:biswasfoni@cu.ac.bd mailto:dr.islam.mbstu@gmail.com http://www.eurjchem.com/ https://crossmark.crossref.org/dialog/?doi=10.5155/eurjchem.9.3.236-240.1732&domain=pdf&date_stamp=2018-09-30� Rahman et al. / European Journal of Chemistry 9 (3) (2018) 236-240 237 H2SO4 I2MW O O R1 = Cl, R2 = H, R3 = Cl R1 = H, R2 = OCH3, R3 = OCH3 R1 = H, R2 = H, R3 = Cl R1 = H, R2 = F, R3 = H a : b : c : 1H-NMR (400 MHz, CDCl3, δ, ppm): 6.96 (m, 1H, C5ˊ-H), 7.05 (d, 1H, J = 8.2 Hz, C3ˊ-H), 7.33 (dd, 1H, J = 6.8 Hz and 2 Hz, C5-H), 7.49 (d, 1H, J = 2 Hz, C3-H), 7.52 (m, 1H, C4ˊ-H), 7.63 (d, 1H, J = 12.8 Hz, Ha), 7.71 (d, 1H, J = 7.2 Hz, C6-H), 8.9 (dd, 1H, J = 6.5 Hz and 2 Hz, C6ˊ-H), 8.23 (d, 1H, J = 12.8 Hz, Hb), 13.41 (s, 1H, OH).	cache/eurjchem-1732.pdf	txt/eurjchem-1732.txt