Description and references

Prepn of mixture of isomers by dehydration of 2-pentanol: Norris, Org. Synth. coll. vol. I, (2nd ed., 1941) p 430. Prepn of the geometrical isomers from cis- and trans-α-methyl-β-ethylacrylic acids: Lucas, Prater, J. Am. Chem. Soc. 59, 1682 (1937). Prepn of the (Z)-form from 1-ethyl-2-iodobutyric acid with quinoline, of the (E)-form from 1-ethyl-2-iodobutyric acid with sodium carbonate: Sherrill, Matlak, ibid. 2134; prepn of both isomers from sec-amyl alcohol with H₂SO₄ and diatomaceous earth at 90-110° for 3 hrs: Lucas et al., ibid. 63, 22 (1941). Absorption spectra: Carr, Stücklen, ibid. 59, 2138 (1937).

Derivative

Derivative