[EN] STABILIZED ORGANOMETALLIC REAGENTS<br/>[FR] RÉACTIFS ORGANOMÉTALLIQUES STABILISÉS
申请人:RIEKE METALS INC
公开号:WO2011115963A1
公开(公告)日:2011-09-22
Compositions of stabilized forms of organometallic reagents, methods of preparing the stabilized forms, and methods of using the stabilized forms, are provided. Stabilized organometallic reagent compositions of the invention are sorbent solids permeated by the organometallic reagent. The reagent can be a Grignard reagent, a Reformatsky reagent, a zinc reagent of the type RZnX, R2Zn, Ar2Zn, R3ZnM, Ar3ZnM, and the like, an organolithium reagent such as n-butyllithium, a organocopper reagent, or other reactive, potentially pyrophoric reagent. The compositions are solids that can be weighed and dispensed in ambient air without requiring inert gas blanketing. The compositions can be prepared by contacting the sorbent solid, which can be silica, an alkyl silica, alumina, or other non-reactive sorbent solid with a solution of the organometallic reagent in a non-reactive solvent, then, removing the solvent, such as under vacuum. The stabilized composition can be used by extracting the organometallic reagent from the composition with a non-reactive solvent and contacting the solution with a reactant.
本发明提供了稳定形式的有机金属试剂组合物、制备稳定形式的方法以及使用稳定形式的方法。本发明的稳定有机金属试剂组合物是由有机金属试剂渗透的吸附固体。试剂可以是格氏试剂、Reformatsky试剂、RZnX、R2Zn、Ar2Zn、R3ZnM、Ar3ZnM等类型的锌试剂,如正丁基锂的有机锂试剂、有机铜试剂或其他反应性潜在易燃试剂。这些组合物是固体,可以在常温下称量和分配,无需惰性气体保护。这些组合物可以通过将吸附固体(如硅胶、烷基硅胶、氧化铝或其他非反应性吸附固体)与非反应性溶剂中的有机金属试剂溶液接触,然后去除溶剂(如在真空下)制备。稳定的组合物可以通过用非反应性溶剂从组合物中提取有机金属试剂,并将溶液与反应物接触来使用。