HuagongsheHuagongshe Chemistry Print Report · For research reference only
2,3-Dihydroxybutanedioic Acid → HCID 131724338, compound
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 2,3-Dihydroxybutanedioic Acid | HCID 875 | — |
| Reactant | 6-Amino-3-butyl-phthalide | HCID 9877706 | — |
| Solvent | Methanol | HCID 887 | — |
| Product | HCID 131724338 | HCID 131724338 | — |
Reaction Steps
A hot solution of 10.26 g (0.05 mol) of compound obtained in Example 4 in 115 ml of anhydrous methanol is mixed with a warm solution of 7.51 g (0.05 mol) of (+)-tartaric acid in 60 ml of methanol. The mixture is put aside at room temperature overnight, and then at 0-5° C. for 2 hours. The separated crystals are collected and washed with a small amount of methanol to give white crystals. Recrystallisation from methanol (1:8) three times gives the title compound containing one molecule of methanol, as white needles.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06689808B2 |
| Source dataset | uspto-grants-2004_02 |
| ORD ID | ord-c96033c29a1c4cd9b15cf07f3773080a |
| Source note | uspto-grants-2004_02 |