Hydroxylated ene ketones, acetylenic grignards and hydroxylated yne ketones therefrom
申请人:MARION MERRELL DOW INC.
公开号:EP0414180A2
公开(公告)日:1991-02-27
An alpha-hydroxyl-alpha,alpha-di(inert-substituted)-gamma′,delta′-yne ketone can be prepared by a procedure comprising contacting an acetylenic Grignard reagent with an alpha-hydroxyl-alpha,alpha-di(inert substituted)-alpha′,beta′-ene ketone, and the alpha-hydroxyl-alpha,alpha-di(inert-substituted)-alpha′,beta′-ene ketone can be prepared by a procedure comprising steps of contacting, first, an alkoxy allene with a lithium donating organic agent, second, product of the first step with a di(inert-substituted)ketone, and third, product of the second step with an acidic substance. For example, 1-cyclobutyl-7-(N,N-dimethylamino)-1-hydroxy-1-phenylhept-5-yn-2-one, hydrochloride salt (ML-1012), can be prepared by the reaction of 1-cyclobutyl-1-hydroxy-1-phenylbut-3-en-2-one and 1-(N,N-dimethylamino)-2-propyn-3-magnesium chloride, followed by salt formation with hydrogen chloride gas, and the 1-cyclobutyl-1-hydroxy-1-phenylbut-3-en-2-one can be prepared by the serial reactions of (1) 1-methoxy allene with n-butyllithium, (2) product of this first step with cyclobutylphenyl ketone, and (3) product of this second step with sulfuric acid.
一种α-羟基-α,α-二(惰性取代)-gamma′,δ′-炔酮可以通过以下步骤制备:将乙炔基格氏试剂与α-羟基-α,α-二(惰性取代)-α′,β′-烯酮接触,然后将α-羟基-α,α-二(惰性取代)-gamma′,δ′-炔酮与α-羟基-α,α-二(惰性取代)-α′,β′-烯酮接触、α-羟基-α,α-二(惰性取代)-α′,β′-烯酮可通过以下步骤制备:首先,将烷氧基烯与锂捐赠有机剂接触;其次,将第一步的产物与二(惰性取代)酮接触;第三,将第二步的产物与酸性物质接触。例如,1-环丁基-7-(N,N-二甲基氨基)-1-羟基-1-苯基庚-5-炔-2-酮盐酸盐(ML-1012)可由 1-环丁基-1-羟基-1-苯基丁-3-烯-2-酮和 1-(N,N-二甲基氨基)-2-丙炔-3-氯化镁反应,然后用氯化氢气体成盐制备、而 1-环丁基-1-羟基-1-苯基丁-3-烯-2-酮可通过以下反应制备:(1) 1-甲氧基烯与正丁基锂的连续反应;(2) 第一步反应的产物与环丁基苯基酮的连续反应;(3) 第二步反应的产物与硫酸的连续反应。