Ethyl Chrysanthemate is an organic building block used in the synthesis of various chemical compounds, such as insecticide, Resmethrin (R144685). It is used in the preparation of trans-norchrysanthemates and trans-norpyrethrates, having insecticidal activity.
Purify the ester by vacuum distillation. The free trans-acid has m 54o (from EtOAc), and the free cis-acid has m 113-116o (from EtOAc). The 4-nitrophenyl ester has m 44-45o (from pet ether) [Campbell & Harper J Chem Soc 283 1945, IR: Allen et al. J Org Chem 22 1291 1957]. [Beilstein 9 II 45.]
