N,N-dimethylhydrazone de phenylethyl cetone;N,N-dimethylhydrazone de la propiophenone;ethyl phenyl ketone N,N-dimethylhydrazone;propiophenone dimethylhydrazone;Propiophenon-N,N-dimethylhydrazon;1,1-Dimethyl-2-(1-phenylpropylidene)hydrazine;N-methyl-N-(1-phenylpropylideneamino)methanamine
Notizen: Montmorillonite K-10 as Highly Efficient and Mild Catalyst for Deprotection of Ketone Dimethylhydrazones Using Microwaves in a Solventless System
Azirines. III. The Preparation of Azirine Derivatives by the Base-Catalyzed Rearrangement of Quaternary Hydrazones
作者:Shimao Sato
DOI:10.1246/bcsj.41.1440
日期:1968.6
An attempt to prepare azirines by the base-catalyzed rearrangement of some quaternary hydrazones gave the corresponding azirine derivatives. Namely, 2-phenyl-3-methylazirine was obtained by the treatment of propiophenone dimethylhydrazone methiodide with potassium t-butoxide, but treatment with sodium isopropoxide gave 2,5-diphenyl-3,6-dimethylpyrazine or 2-phenyl-2-isopropoxy-3-methylaziridine, depending
Notizen: Montmorillonite K-10 as Highly Efficient and Mild Catalyst for Deprotection of Ketone Dimethylhydrazones Using Microwaves in a Solventless System
N,N-Dimethylhydrazones of ketones were efficiently and rapidly deprotected to the corresponding ketones by Montmorillonite K-10 clay using microwave irradiation under solvent free conditions.
酮的N,N-二甲基肼酮在无溶剂条件下,通过微波辐射和蒙脱石K-10粘土高效快速地脱保护为相应的酮。
Regio- and stereoselectivity in the cyclization of enolates derived from 4,5-, 5,6-, and 6,7-epoxy-1-phenyl-1-alkanones. Competition between C- and O-alkylation
作者:Paolo Crotti、Valeria Di Bussolo、Lucilla Favero、Franco Macchia、Mauro Pineschi、Elio Napolitano
DOI:10.1016/s0040-4020(99)00226-4
日期:1999.4
The results obtained in the base-catalyzed intramolecular cyclization of enolates derivedfrom some representative 4,5-, 5,6-, and 6,7-epoxy ketones and of the corresponding alkenes are discussed. The LHMDS/Sc(OTf)3 protocol on epoxy ketones appears to be a valuable tool for the stereoselective obtainment of the corresponding cyclic γ-hydroxy ketones (γ-HKs).
Deprotection of ketone dimethylhydrazone compounds with porcine pancreatic lipase (PPL) as a biocatalyst is described.
描述了用猪胰脂肪酶(PPL)作为生物催化剂对酮二甲基hydr化合物的脱保护。
Neighboring group participation in Lewis acid-promoted [3 + 4] and [3 + 5] annulations. The synthesis of oxabicyclo[3.n.1]alkan-3-ones
作者:Gary A. Molander、Kimberly O. Cameron
DOI:10.1021/ja00056a002
日期:1993.2
2-(alkoxycarbon)-m-oxabicyclo[3.n.1]alkan-3-ones can be constructed by this process in which two new carbon-carbon bonds are generated. Unusually high regioncontrol is observed, and good to excellent stereochemicalcontrol can be achieved at virtually every position on the new carbocycles. Intramolecular neighboringgroupparticipation is proposed to explain the unusually high selectivities attained in the annulation