Sulfocarboxylic acid anhydrides

Sulfocarboxylic acid anhydrides 1-Alkoxy-l-sulfonyloxy compds. 1-Aryloxy-l-sulfonyloxy compds. [Pg.270]

Sulfamylcarboxylic acid esters from sulfocarboxylic acid anhydrides via sulfo- and chlorosulfonyl-carboxylic acid esters G s. 18, 349... [Pg.494]

Sulfamylcarboxylic acid esters from sulfocarboxylic acid anhydrides... [Pg.90]

Sulfite 22, 54 o-Sulfobenzoic anhydride as reagent 22, 921 Sulfocarboxylic acid anhydrides... [Pg.289]

In order to introduce an SO3 group into long-chain fatty acids, direct sulfonation with sulfur trioxide bad been suggested in 1962 [29], similar to the Hell-Volhard-Zelinskii reaction of the a-bromation studied by Watson [34]. Ten years previously de Boer had reviewed this mechanism, among others, for lower aliphatic sulfocarboxylic acids [35]. The sulfonation process was proposed as a two-step mechanism. The first step is the rapid addition of the SO3 into the 0-H binding of the COOH group to form a mixed anhydride and the second step is the slow rearrangement of the mixed anhydride to form the a-sulfo fatty acid. [Pg.428]

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