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Khimiko-Farmatsevticheskii Zhurnal, 1987 , vol. 21, # 6 p. 700 - 711
1: 3-chloro-1,6-dihydro-6-oxo-pyridazine With potassium hydroxide in ethanol
2: 1,3-dibromo-propane With tetrabutyl-ammonium chloride in toluene
T=65°C; 100 h; Further stages.;
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CINCINNATI CHILDREN'S HOSPITAL MEDICAL CENTER; UNIVERSITY OF CINCINNATI; Merino, Edward J.; Mulloy, James C.; Li, Guorui; Bell-Horwath, Tiffany
Patent: US2013/230542 A1, 2013 ;
Location in patent: Paragraph 0142 ;