References
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- Chemical Pure, From Ningbou Xiangyang Chemical Plant (in china).
- Reaction solvent: petroleum ether (60/90) for 2a, 2c-2g; petroleum ether (30/60) for 2b.
- The spectral data (TR) are identical with an authentic spectrum.
- Recrystallization solvent: ethanol absolute for 2a-2c, 2e, 2f; ethyl acetate for 2d, 2g.
- Isolated as the 2.4-DNP.
- Buckingham , J. 1982 . Dictionary of Organic Compounds , New York : Chapman & Hall .
- Rodionov , V. M. , Alekseeva , E. N. and Vaver , V. A. 1953 . Zhur. Obshchei Khim. , 23 : 1842 C. A. 1955, 49, 867.
- Lou , J. D. and Lou , W. X. 1987 . Synthesis , : 179
- Ivai , I. and Okajina , Y. 1959 . Yakugaku Zasshi , 79 : 1248 C. A. 1960, 54, 4774.