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1: acetoacetic acid methyl ester With sodium hydride in tetrahydrofuran T=0°C; 0.5 h; 2: methyl iodide in tetrahydrofuran T=0 - 20°C; 1 h; 3: methyl iodide With sodium hydride more than 3 stages;
参考文献
Hadida Ruah, Sara S.; Grootenhuis, Peter D.J.; Van Goor, Frederick; Zhou, Jinglan; Bear, Brian; Miller, Mark T.; McCartney, Jason; Numa, Mehdi Michel Jamel
Patent: US2007/244159 A1, 2007 ;
Location in patent: Page/Page column 129 ;
