The various new aliphatic 1,3-diols, containing primary, secondary, tertiary, and mixed of these groups, were synthesized and used for the solvent extraction of boron. Diols (8a, 8b, 9, 10a, 10b, 11, 12a, 12b, 13) were prepared from (beta-hydroxy carbonyl compounds 1-7. The fixed standard solution of boric acid of 1.00x10(-2) M was extracted with 0.1 M and 0.5 M diols at equilibrium pH of 2 and at constant ionic strength (I=0.5). The best extracting reagent was found to be 11, which is a primary-tertiary class of -OH groups and methyl groups as a substituent on the second carbon of 1,3-diol.