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EC number: 279-356-6 | CAS number: 79953-85-8
Table 1. Classes of compounds undergoing hydrolysis
Carboxylic acid esters
They hydrolyse by base-promoted reactions at pH 5-6.
Less hydrolytically reactive than esters. Typical half-lives under environmental conditions – hundreds to thousands of years.
In fresh waters they hydrolyse to the corresponding alcohol. For polyhalogenated alkanes, a 1,2 or 1,1 elimination is the most general elimination reaction.
Hydrolyses occurs by neutral, acid- or base- mediated reactions. Acid and neutral processes generally dominate over the range of environmental pH.
They undergo acid and alkaline hydrolysis to the corresponding amide first, and then to carboxylic acid and ammonia.
They can undergo hydrolysis depending on the substituents on the N atom. When an alkyl substituent is present on the N atom, hydrolysis is much slower.
The hydrolysis reaction is highly pH dependend. The principal cleavage occurs at the sulfonylurea bridge.
Hydrolysis can occur by direct nucleophilic attack at the P atom, without the formation of a pentavalent intermediate.
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