McKeen, Catherine M.; Brown, Lynda J.; Nicol, Jamie T.G.; Mellor, John M.; Brown, Tom
Organic and Biomolecular Chemistry, 2003 , vol. 1, # 13 p. 2267 - 2275
Pierce,A.C.; Joullie,M.M.
Journal of Organic Chemistry, 1963 , vol. 28, p. 658 - 662
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King,A.P.; Krespan,C.G.
Journal of Organic Chemistry, 1974 , vol. 39, p. 1315 - 1316
1: With sodium ethanolate in di-isopropyl ether
T=60°C;
2: With sulfuric acid in water
Heating / reflux;
3: With hydrazine in ethanol
T=0°C; Heating / reflux;
参考文献
TAKEDA CHEMICAL INDUSTRIES, LTD.
Patent: WO2003/99793 A1, 2003 ;
Location in patent: Page 271 ;