Benzaldehyde Dimethylhydrazone

Conversely, using the hydrazone waves for the analysis of mixtures of hydrazine derivatives, it is possible to analyse mixtures of hydrazine and 1,1-dimethylhydrazine from the waves of benzalazine and benzaldehyde dimethylhydrazone.< 2 >... 

The effect of varying R1/R2, the ligands at titanium and the substituents at the terminal nitrogen atom should allow for more insight. In this connection it is interesting to note that the titanated form of cyclohexanone dimethylhydrazone reacts with benzaldehyde >98% erythro-selectively115). 

A,A-dimethylhydrazones react with vinylsilane at the a-position. Zincated species are derived from dimethylhydrazones, vinylmagnesium bromide, and zinc bromide which afford a-ethylated products. If benzaldehyde is added before workup a net cinnamylation results. 

Hydrogen peroxide oxidizes the N,N-dimethylhydrazones of benzaldehyde and cinnamaldehyde to the corresponding nitriles in good yield.6... 

The substrates were synthesized by Wadsworth Emmons reaction of the lithio-anion derived from 3-(diethylphosphoryl)propenone dimethylhydrazone with 2-(2-propynyloxy)benzaldehyde and 2-(3-phenyl-2-propynyloxy)benzaldehyde. 

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