Synthese von <scp>L</scp>‐Serin

Baganz, Horst; Dransch, Günter

doi:10.1002/cber.19610941005

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1965

1968

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Cited by 3 publications

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“…Baganz and Dransch had reported the acetylmethyl ester, obtained with acetic anhydride, as being hydroscopic (18 esters both crystallize out during the reaction in yields of over 80%. The trityl ester is also a suitable derivative for further use.…”

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confidence: 99%

Conversion of β-chloro-L-alanine to α-carbobenzoxy-DL-diaminopropionic acid

Benoiton¹

1968

Can. J. Chem.

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Several N-acyl-P-chloroalanine esters have been prepared from the ester which was obtained by chlorination of L-cystine diester. Reaction of benzoyl-P-chloro-L-alanine ethyl ester with potassium phthalimide followed by acid hydrolysis yielded DL-diaminopropionic acid. Reaction of carbobenzoxy-achloro-L-alanine ethyl ester with potassium phthalimide followed by saponification and mild acid hydrolysis yielded a-carbobenzoxy-DL-diaminopropionic acid. The racemization took place during the amination step.

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confidence: 99%