Add time:08/30/2019         Source:sciencedirect.com

An almost quantitative synthesis of N-methyl-2-anilino-6-naphthalenesulfonyl hydrazine (2,6-mansyl hydrazine) from sulfonyl chloride and hydrazinlum hydroxide is described. The 2,6-mansyl chloride was prepared by different methods from 6-hydroxynaphthalene-2-sulfonic acid (overall yield: 69%). The N- and the O-mansylation of suitable compounds (e.g., amines, amino acids, and phenolic steroids) with 2,6-mansyl chloride and the preparation of oxosteroid-2,6-mansyl hydrazones are deseribed, and the derivatives obtained, their uv spectra, and methods for their thin-layer chromatographic separation are compared with the corresponding data for dansylated compounds.

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