(S)-(-)-2-Chloropropionic acid Chemische Eigenschaften,Einsatz,Produktion Methoden
R-Sätze Betriebsanweisung:
R21/22:Gesundheitsschädlich bei Berührung mit der Haut und beim Verschlucken.
R35:Verursacht schwere Verätzungen.
S-Sätze Betriebsanweisung:
S23:Gas/Rauch/Dampf/Aerosol nicht einatmen(geeignete Bezeichnung(en) vom Hersteller anzugeben).
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S28:Bei Berührung mit der Haut sofort abwaschen mit viel . . . (vom Hersteller anzugeben).
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
Beschreibung
(S)-2-chloropropanoic acid is a monocarboxylic acid that is propanoic acid substituted at position 2 by a chloro group (the S-enantiomer). It has a role as a neurotoxin. It is a monocarboxylic acid and a chlorocarboxylic acid. It is functionally related to propionic acid. It is a conjugate acid of a (S)-2-chloropropanoate.
Chemische Eigenschaften
Colourless Oil
Verwenden
Through the stereo displacement of (S)-(-)-2-Chloropropionic acid PPAR Agonist can be synthesized via asymmetric hydrogenation of a cinnamic acid derivative.
Definition
ChEBI: A monocarboxylic acid that is propanoic acid substitued at position 2 by a chloro group (the S-enantiomer).
Allgemeine Beschreibung
2-Chloropropionic acid is an essential raw material for synthesising pesticides, dyes and medicines. Its application involves many sectors of the national economy and people's daily lives. It is an essential fine chemical product. In particular, (S)-(-)-2-Chloropropionic acid is a crucial intermediate for synthesising highly efficient and low-toxic aromatic oxygen propionic acid herbicides. For example, it can be used to synthesize (R)-2-(4-hydroxyphenoxy) propionic acid (ester) intermediates, fenthionyl, fenthionyl, fenthionyl, etc. At present, the preparation methods of (S)-(-)-2-chloropropionic acid and (R)-(+)-2-chloropropionic acid include: (1) chemical resolution method; (2) bioenzymatic resolution method; (3) chromatographic resolution method; (4) asymmetric synthesis method, etc.
läuterung methode
Purify the acid by fractionating twice through a 115cm Podbielniak column (p 11, calculated 50 theoretical plates at atmospheric pressure) using a take-off ratio of 1:5. The acid chloride is prepared by dissolving the acid in SOCl2, adding a few drops of PCl3, refluxing and then distilling through a 30cm column, b 53o/100mm, [] -4.6o (neat), d 1.2689, n1.4368. [Fu et al. J Am Chem Soc 76 6954 1954, Beilstein 2 IV 745.]
(S)-(-)-2-Chloropropionic acid Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
