HuagongsheHuagongshe Chemistry Print Report · For research reference only
DL-cysteine → HCID 13131476, compound
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | DL-cysteine | HCID 594 | — |
| Reactant | Mandelic Acid | HCID 1292 | — |
| Reactant | L-(+)-Cysteine | HCID 5862 | — |
| Product | HCID 13131476 | HCID 13131476 | — |
| Product | (2R)-2-amino-3-sulfanylpropanoic acid;(2S)-2-hydroxy-2-phenylacetic acid | HCID 13131477 | — |
Reaction Steps
The first step of carrying out the present method is to dissolve free DL-cysteine or cysteine containing excess amount of one of the enantiomers thereof in a liquid medium. Also, optically active mandelic acid is dissolved in the same kind of liquid medium. The latter solution (mandelic acid solution) is gradually added to the former solution (cysteine solution). Then, the less soluble complex will preferentially precipitates or crystallizes out in the mixed solution. Separation of the solid from the liquid gives L-cysteine L-mandelic acid or D-cysteine D-mandelic acid.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04621151 |
| Source dataset | uspto-grants-1986_11 |
| ORD ID | ord-7667111caad74c2aaa3acf132fd66e32 |
| Source note | uspto-grants-1986_11 |