Ahmad-Strong synthesis of 8-, 9-, and 10-pentadecynoic acids.
Three pentadecynoic acids, with the triple bond in the 8-, 9-, and 10-positions, have been synthesized on a gram scale in over-all yield of 65% by refinements of the five-step Ahmad-Strong method; isolation of intermediates was shown to be unnecessary prior to purification of the acetylenic nitriles by column chromatography on silicic acid. The melting points of the pentadecynoic acids alternate regularly and widely with position of unsaturation, in marked contrast to behavior of the homologous octadecynoic acids described by Huber.
D055598:Chemical Phenomena; D002627:Chemistry, Physical; D002849:Chromatography, Gas; D002852:Chromatography, Ion Exchange; D005227:Fatty Acids / Q000138:chemical synthesis*; D013053:Spectrophotometry; D014466:Ultraviolet Rays
D005227:Fatty Acids