A Visit to Wittig and Arsa-Wittig Reactions

Some considerations regarding the mechanism of arsa-Wittig condensation have been supplemented with the synthesis of compounds substituted with the nitro to phenyl and various alkyl groups to the azulene moiety. For several unknown meta-substituted 1-styrylazulenes Wittig synthesis was used. The obtained products were completely characterized. A look at the behavior of the products in NMR and UV-Vis spectrometry was taken.