Oxidation of Dihydrazones of Diaryl α-Diketones to Diarylacetylenes Using Sodium Periodate
作者:Balaram S. Takale、Vikas N. Telvekar
DOI:10.1246/cl.2010.1279
日期:2010.12.5
Oxidation of dihydrazones of α-diketones to acetylene was investigated by using sodium periodate. Further, the described method is also found to be suitable for deprotection of monohydrazones of al...
使用高碘酸钠研究了 α-二酮的二腙氧化成乙炔。此外,还发现所描述的方法适用于 al 的单腙的脱保护。
Novel Salicylaldehyde-Based Mineral-Supported Expeditious Synthesis of Benzoxazin-2-ones
作者:Lal Dhar S. Yadav、Ritu Kapoor
DOI:10.1021/jo0492315
日期:2004.11.1
One-pot montmorillonite K-10 clay supported reactions of either salicylaldehyde/2-hydroxyacetophenone hydrazones and aryl-/alkylureas or salicylaldehydes/2-hydroxyacetophenone and 4-aryl-/alkylsemicarbazides expeditiously yield 3,4-dihydro-4-hydrazino-2H-benz[e]-1,3-oxazin-2-ones (9) via cycloisomerization of the intermediate salicylaldehyde/2-hydroxyacetophenone 4-aryl-/alkylsemicarbazones (5) under
水杨醛/ 2-羟基苯乙酮supported与芳基-/烷基脲或水杨醛/ 2-羟基苯乙酮与4-芳基-/烷基半脲的一锅蒙脱土K-10粘土反应迅速生成3,4-二氢-4-肼基-2 H -在无溶剂微波辐射下,通过中间体水杨醛/ 2-羟基苯乙酮4-芳基-/烷基半咔唑酮(5)的环异构化反应生成苯并[ e ] -1,3-恶嗪-2-酮(9)。在相同条件下,肼(9)易于在氧化铝负载的硫酸铜(II)上进行还原性脱水,以提供2 H-苯并[ e ] -1,3-恶嗪-2-酮(10)。
Amide hydrazones from hydrazones and sulphonyl chloride–amide complexes
作者:W. Hoyle
DOI:10.1039/j39670000690
日期:——
Hydrazones of 5-nitro-2-furaldehyde, 3,5-dibromosalicylaldehyde, and o-hydroxyacetophenone condense with the carbonyl group of NN-disubstituted aliphatic amides in the presence of sulphonyl chlorides to yield amidehydrazones.