The isomerization of epoxides to aldehydes using the readily available Crabtree's reagent is described. The aldehydes were transformed into synthetically useful amines by a one‐pot reductive amination using pyrrolidine as imine‐formation catalyst. The reactions worked with low catalyst loadings in very mild conditions. The procedure is operationally simple and tolerates a wide range of functional groups
The Meinwald rearrangement reaction of oxiranes to the corresponding carbonyl compounds is efficiently catalyzed by the ReBr(CO)5 complex.
ReBr(CO)5络合物可有效催化肟酮与相应的羰基化合物的Meinwald重排反应。
Esters of derivatives of 1,1-diphenyl-3-amino-propan-2-ol
申请人:Beecham Group Limited
公开号:US04113972A1
公开(公告)日:1978-09-12
1,1-Diphenyl-2-hydroxy-3-aminopropane derivatives are useful for their psychotropic activity and, in particular are useful as antidepressants.
1,1-二苯基-2-羟基-3-氨基丙烷衍生物因其精神活性而有用,特别是作为抗抑郁药物有用。
The trading of space for time under weakly activated catalysis: expeditious synthesis of β-NH<sub>2</sub> alcohols <i>via</i> a direct ammonolysis of epoxides with ammonia
The direct synthesis of β-NH2 alcoholsvia flexible ammonolysis of epoxides is still a challenging and unresolved problem. Herein, we present a strategy of “trading space for time under weakly activated catalysis” and “shielding the reactivity of the product”, and thereby developed a novel single-step ammonolysis reaction of epoxides with ammonia. A stoichiometric amount of HCO2NH4 as an additive plays