The present invention refers to a carbonylated compounds preparation process from a vegetable product and resulting carbonylated compounds. The vegetable product mentioned is from renewable resources. These carbonylated compounds can be used replacing several products mainly aldehydes. The process proposed comprises the carbohydrate activation that consists on getting the carbohydrate in touch with the Lewis' acid in order to facilitate a following nucleophilic substitution process. This activation occurs at same temperature of the carbohydrate preparation process. The mixture nucleophile/carbohydrate at controlled conditions will generate substituted carbonylated compounds. This process is carried on temperatures not lower than 20.degree. C. and not higher than 105.degree. C., for running time not lower than 10 minutes. It is necessary to stabilize the resulting substituted aldehyde mixture with any suitable stabilizing agent for this purpose. Stabilizing agent proportion will vary from 0 to 5% in mass. A biocide is added in order to eliminate the possibility of bacterial degradation of any remaining non-reacted carbohydrates residual. This biocide is added in proportions that vary from 0 to 1% in mass.