(18) Inasmuch as Lucas, Schlatter and Jones5 claim that 2-pentene derived from 2-pentanol consists of approximately 75% trans-and 25% cis-isomer, it is possible that the: runs-isomer may have sulfonated in the 2-position and the cis-isomer in the 3-position. However, proof of this possibility would rest upon sulfonation experiments with the pure isomers. acid in chloroform solution at 0-5'gave a mixture of isomeric pentenesulfonic acids. 2. By ...