| 摘要 |
PURPOSE:To obtain the titled compound useful as a raw material for agricultural chemicals, drugs, blowing agents, etc., by the use of inexpensive raw materials economically and in high yield, by reacting hydrazine with an olefinic hydrocarbon in the presence of an inorganic acid. CONSTITUTION:Hydrazine is reacted with an olefinic hydrocarbon shown by formula I (R<1>, R<2> and R<3> may be same or different and are H or lower alkyl) in the presence of an inorganic acid usually at about 70-150 deg.C, preferably about 90-110 deg.C to give compounds shown by formula II and formula III. A hydrohalogenic acid, sulfuric acid, alkali hydrogensulfate, etc., are used as the inorganic acid and the amount of the inorganic acid used is preferably 1-5mol based on 1mol hydrazine. Hydrazine is usually used in an aqueous solution of an inorganic acid salt of hydrazine or hydrazine hydrate. The amount of the compound shown by formula I is preferably 0.5-1.5mol based on 1mol hydrazine when the compound shown by formula II is synthesized. |
