Abstract
The development of selective and preparatively suitable means for obtaining l-bromoalkan-2-ones (BK) from methylketones [i] and terminal olefins [2-4] opened up many possibilities for using BK in the syntheses of biologically-active compounds. Effective syntheses of pterines [5], 8-aminolevulinic acid hydrochlorides (I) biological precursors to heam, chlorophyll, and vitamin Bl2 [6, 7], imidazole derivatives [8], and pheromones [9] have already been carried out using BK as starting material. Most of these syntheses are characterized by multistep procedures, satisfactory yields of the desired products, and the accessibility of starting materials and reagents.
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