Esterification of sulfonic acids

Trifluorodiazoethane is a convenient reagent for esterification of sulfonic acids [5f] A bulky perfluorodiazoalkane reacts with tritluoroacetic acid to lorm a trifluoroacetate [32] (equations 27 and 28)... 

Esterification of sulfonic acids.1 Sulfonic acids are converted into methyl or ethyl esters on reaction with trimethyl or triethyl orthoformate. Yields are >80% in esterification of arenesulfonic acids, but are somewhat lower in the reaction of alkanesulfonic acids because of volatility of the products. 

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See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ ]

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