Schmidt reactionRitter reactionThe first example of the direct conversion of benzaldehydes into their corresponding N - tert -butyl amides through a Schmidt reaction/Ritter reaction sequence is described. A reagent mixture consisting of NaN3 and HBF4·OEt2 in acetic acid efficiently reacts with ...
aNatural products and bioactive molecules containing 2-pyridinone structures.bTraditional Schmidt reaction with azides as the limiting reagent.cReactivity patterns of aryldiazonium salts.dOur study on 2-pyridinone synthesis via the sequence involving Nazarov cyclization, nucleophilic addition, and Schmidt rea...
Schmidt reaction of arylaldehydes, ketones and aromatic carboxylic acids using task-specific ionic liquid, [bmim]N3 in the presence of AcOH/H2SO4 proceeds at 50–60 °C within 2–4 h to give the corresponding products. Benzaldehydes containing electron releasing groups afforded to the related ...
3) Claisen reaction 克莱森酯缩合反应4) Claisen condensation 克莱森缩合反应5) Claisen method 克莱森法6) claisen flask 克莱森瓶补充资料:克莱因,F. 德国数学家。1849年4月25日生于杜塞尔多夫,1925年 6月22日卒于格丁根。1872～1875年任埃朗根大学数学教授。1880～1886年任莱比锡大学教授,1886～...
The reaction is applied to aromatic aldehydes, methyl ketones and phosphonate (III) (Bestmann—Ohira reagent) to afford substituted 5-phosphonylpyrazoles.doi:10.1002/chin.201143170AnthonyInst.R.Inst.MartinInst.KishorInst.MohananInst.LoicInst.
[Bmim]N3 as an efficient reagent for the Schmidt reactions of ketones, arylaldehydes and aromatic carboxylic acidsAldehydesCarboxylic acidsKetonesSchmidt reactionSchmidt reaction of arylaldehydes, ketones and aromatic carboxylic acids using task-specific ionic liquid, [bmim]N 3 in the presence of AcOH/...
This transformation gives good to excellent yield for numerous aromatic, aliphatic and heterocyclic nitriles using very simple reagent. This method has avoided the use of transition metal catalyst, toxic cyanide, hazardous solvent and offers a greener, simple and environment friendly procedureBijeta...
It has been found that ammonium chloride, which is a very inexpensive and readily available reagent, can efficiently catalyzed Claisen-Schmidt reaction between ketones and aldehydes. α,α'- Bis(arylmethylene)cycloalkanones, α,α'-bis(cinnamylidene)cycloalkanones, α-cinnamylideneacetophenones and...
polysubstituted cyclohexenones in excellent yields has been developed through Michael addition and Claisen-Schmidt condensation of aldehydes and acetophenone with 3-oxo-N-phenylbutanamide using piperidine as an effective reagent under mild conditions within sort reaction time without using any previous ...
Nonoxidative and noncoupling reaction conditions have been developed for the synthesis of N-(diphenylmethyl)- and N-(1-adamantyl)amide derivatives directly from aldehydes by employing the concept of a Schmidt and Ritter reaction sequence in a one-pot operation. The reagent mixture consisting of ...