DR ANTHONY MELVIN CRASTO,WorldDrugTracker, helping millions, A 90 % paralysed man in action for you, I am suffering from transverse mylitis and bound to a wheel chair, With death on the horizon, nothing will not stop me except God................DR ANTHONY MELVIN CRASTO Ph.D ( ICT, Mumbai) , INDIA 25Yrs Exp. in the feld of Organic Chemistry,Working for GLENMARK GENERICS at Navi Mumbai, INDIA. Serving chemists around the world. Helping them with websites on Chemistry.Million hits on google, world acclamation from industry, academia, drug authorities for websites, blogs and educational contribution

Tuesday 23 September 2014

Your sister will teach you spectroscopy..3 ACETYL COUMARIN


 




3 ACETYL COUMARIN
CAS 3949-36-8
Synonym Name:
3-Acetyl-2H-chromen-2-one; 2H-1-benzopyran-2-one,
3-acetyl-; 3-acetyl-chromen-2-one
Synthesis Reference:
Monatshefte fur Chemie, 121, p. 85, 1990
H1 NMR Spectrum
Liu, Jinbing; Wu, Fengyan; Chen, Lingjuan; Zhao, Liangzhong; Zhao, Zibing; Wang, Min; Lei, Sulan
Food Chemistry, 2012 ,  vol. 135,  4  pg. 2872 - 2878

1H NMR, 400 MHZ
chloroform-d1
1H NMR (400 MHz, CDCl3):
δ 8.49 (s, 1H, C=CH),
7.65-7.63 (m, 2H, Ph-H),
7.37-7.32 (m, 2H, Ph-H),
2.71 (s, 3H, CH3)


13 C NMR
(100 MHz, CDCl3)
δ 195.41 (1C),  C=O OF ACETYL
159.17 (1C), C=O OF COUMARIN
155.27 (1C), ARC-O-C=O
147.39 (1C),
134.33 (1C),
130.17 (1C),
124.92 (1C),
124.48 (1C),

118.20 (1C),
116.63 (1C),
30.49 (1C)    -CH3

IR (KBr): 3078, 3026,
1723,  C=O
1675, 1598, 1556, 1441, 1406, 1351, 1297, 1220, 1198, 1162, 1098, 967, 762 cm-1

No comments:

Post a Comment