Broche, Andre et al. published their research in Compt. rend. in 1944 | CAS: 26340-58-9

(E)-4-Chlorobut-2-enoic acid (cas: 26340-58-9) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Recommanded Product: (E)-4-Chlorobut-2-enoic acid

Esters of γ-chloro-β-hydroxy- and β,γ-dichlorobutyric acid. Preparation of pure ethyl γ-chlorocrotonate was written by Broche, Andre;Rambaud, Rene. And the article was included in Compt. rend. in 1944.Recommanded Product: (E)-4-Chlorobut-2-enoic acid This article mentions the following:

The action of P2O5 on ClCH2CH (OH) CH2CO2Et gives ClCH2CH:CHCO2Et (I) contaminated with ClCH:CHCH2CO2Et (II), and pure I cannot be obtained by distillation The mixture always shows lines in the ethylenic region of the Raman spectrum at 1666, 1651, and 1607 cm.-1; the last two are of approx. equal intensity and are weaker than the first. Pure II is obtained by the following series of reactions. The action of SOCl2 on ClCH2CH(OH)CH2CO2Et gives ClCH2CHClCH2CO2Et, b12 94-5°, d. 1.217, nD19 1.456; this with dilute NaOH yields trans-ClCH2CH:CHCO2H, m. 82.7°, which with SOCl2 gives ClCH2CH:CHCOCl, b16 74-4.5°, d. 1.316, nD11 1.501, and this with C5H5N and EtOH yields I, b13 83°, d. 1.118, nD14 1.463. The Raman spectrum of pure I shows lines at only 1666 and 1651 cm.-1; it is therefore trans, by analogy with the Me and Et fumarates, which show 2 unequal lines. The following esters were prepared From ClCH2CH(OH)CH2CO2H: Me, b13 104-5°, d. 1.259, nD14.5 1.458; Pr, b8 114-15°, d. 1.150, nD21 1.453; Bu, b4 123-4.5°, d. 1.121, nD20 1.453; iso-Bu, b9 122-4°, d. 1.116, nD24 1.451. From ClCH2CHClCH2CO2H: Me, b15 89.5-90°, d. 1.278, nD23 1.459; Pr, b14 114-15°, d. 1.175, nD19 1.454; Bu, b15 127-8°, d. 1.143, nD24 1.454; iso-Bu, b15 121-2°, d. 1.138, nD20 1.452. In the experiment, the researchers used many compounds, for example, (E)-4-Chlorobut-2-enoic acid (cas: 26340-58-9Recommanded Product: (E)-4-Chlorobut-2-enoic acid).

(E)-4-Chlorobut-2-enoic acid (cas: 26340-58-9) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Recommanded Product: (E)-4-Chlorobut-2-enoic acid

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics