66400-83-7

Upstream product

• 66400-82-6 2-Cyclohexyl-2-(dimethylamino)acetaldehyd-dimethylhydrazon 
• 87112-30-9 N,N,N',N'-tetramethyl-1,2,5-triaza-pentadienium cation 
• 98-89-5 Cyclohexanecarboxylic acid 
• 931-50-0 cyclohexylmagnesium bromide 
• 102651-71-8 1-<2-(Dimethylhydrazono)-1-hydroxyethyl>cyclohexancarbonsaeure, Dilithiumsalz 
• 7422-90-4 acetaldehydedimethylhydrazone 
• 108-94-1 cyclohexanone 

Downstream Products

• 102651-82-1 3-(1-Cyclohexen-1-yl)propenal-dimethylhydrazon 
• 102651-85-4 (E)-3-(cyclohex-1-en-1-yl)acrylaldehyde 
• 56453-88-4 (E)-3-(1-cyclohexen-1-yl)-2-propenoic acid 
• 1552-91-6 cyclohexylideneacetic acid 
• 1713-63-9 cyclohexylideneacetaldehyde 

Relevant academic research and scientific papers

Preparation of Methine Homologues of Aldehydes and Carboxylic Acids

Dilithium salts of carboxylic acids add to glyoxal mono(dimethylhydrazone) (5) to give salts of β-hydroxy carboxylic acids.Reaction with tosyl chloride affords via decarboxylation the corresponding unsaturated aldehyde hydrazones 10 or 15, which are easily hydrolyzed and oxidized to form unsaturated carboxylic acids.By this method aldehydes and/or carboxylic acids may be extended by one methine group.Extension by three methine groups can be achieved with vinylogous monohydrazones such as 23.

Reactions with Monohydrazones of Dicarbonyl Compounds, XI. N,O-Acetal of Glyoxal Monodimethylhydrazone and (Hydrazonoethylidene)ammonium Salts as Reagents for Synthesis

CH-acidic compounds react with glyoxal monodimethylhydrazone (GMD, 1), with the N,O-acetal of GMD 10a, and with (hydrazonoethylidene)ammonium salts 8 to give the respective hydrazonoethylidene derivatives.The reagents are compared.