| 摘要 |
Alkyl N-(hydroxyalkyl)-carbamates of the formula (I) <IMAGE> (I) in which R1 represents alkyl and R2 to R8 are identical or different and represent hydrogen or alkyl, or R2 and R3 together with the atoms to which they are bonded, form an optionally alkyl-substituted monocyclic ring, and n denotes 0 or 1, can be obtained in high purity and very good space-time-yields when amino alcohols of the formula (II) <IMAGE> (II) in which R2 to R8 and n have the abovementioned meaning are reacted with chloroformates of the formula (III) <IMAGE> in which R1 has the abovementioned meaning, in the presence of aqueous alkali metal hydroxide solutions and if appropriate in the presence of an organic solvent at temperatures between 30 DEG C. and 110 DEG C. The substances prepared according to the invention can be employed as active compounds in agents for repelling insects and mites (cf. EP-A 289,842).
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