cas 51887-88-8, BETA-CHLORO-D-ALANINE HYDROCHLORIDE | Articles data ｜lookchem

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51887-88-8

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Processes for producing β-halogeno-α-amino-carboxylic acids and phenylcysteine derivatives and intermediates thereof
An industrially advantageous method of producing β-halogeno-α-aminocarboxylic acids is provided. Methods are also provided of producing optically active N-protected-S-phenylcysteines having high optical purity and of intermediates thereof, respectively, in which the above production method is utilized. A method of producing β-halogeno-α-aminocarboxylic acids or salts thereof is disclosed which comprises halogenating the hydroxyl group of a β-hydroxy-α-aminocarboxylic acid (in which the basicity of the amino group in α-position is not masked by the presence of a substituent on said amino group) or a salt thereof with an acid with a halogenating agent. A method of producing optically active N-protected-S-phenylcysteines represented by the general formula (3) or salts thereof is further disclosed which comprises applying the above production method to optically active serine or a salt thereof and then carrying out treatment with an amino-protecting agent and reaction with thiophenol under a basic condition.
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Example 5

(2010/01/31)

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312-84-5
D-Serine

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Chemical Properties

Boiling Point: 243.6 °C at 760 mmHg
Flash Point:101.1 °C
Solubility:DMSO (Slightly), Methanol (Sparingly), Water (Slightly)
Storage Temp.:−20°C
Vapor Pressure: 0.0105mmHg at 25°C
PSA: 63.32000
LogP: 1.13940

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