| 摘要 |
PURPOSE:To produce the titled substance, by reacting a carbonyl compound with a halogenated allyl compound and metallic Al in an organic solvent containing a proton donor in the presence of less than stoichiometric amount of metallic Sn, a bivalent Sn compound, a tetravalent Sn compound, etc. CONSTITUTION:The objective compound of formula III or formula IV can be produced by reacting the compound of formula I (R1 and R2 are H, alkyl, aryl, etc., or together form a cycloalkyl) with the compound of formula II (R3-R7 are H, alkyl, aryl, etc. or R3 and R5, R3 and R6, R5 and R6 or R6 and R7 together form cycloalkyl) and metallic Al, in an organic solvent containing proton donor (e.g. alcohol, fatty acid, etc.) in the presence of less than the stoichiometric amount (preferably 0.05-0.1mol) of metallic Sn and/or a bivalent Sn compound and/or a tetravalent Sn compound. The produced Sn compound having high atomic valence is reduced and reused. EFFECT:The consumption of expensive Sn can be decreased by the use of Al as an activation agent. |
