HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 522525Generated: October 29, 2026
Hydrochloric Acid → HCID 51000409, compound
https://huagongshe.com/reaction/522525
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | Lithium Hydroxide | HCID 3939 | — |
| Reactant | Methyl 3-amino-6-(4-(methylsulfonyl)phenyl)pyrazine-2-carboxylate | HCID 51000410 | — |
| Solvent | Methanol | HCID 887 | — |
| Solvent | Water | HCID 962 | — |
| Product | HCID 51000409 | HCID 51000409 | 99% |
Reaction Steps
A mixture of methyl 3-amino-6-(4-methylsulfonylphenyl)pyrazine-2-carboxylate (3.5 g, 11.39 mmol) and lithium hydroxide (1.364 g, 56.95 mmol) in MeOH (13.70 mL) and H2O (13.70 mL) was heated to 90° C. for 2 hours. The reaction mixture was allowed to cool and neutralised with aqueous HCl, and the resultant precipitate collected by filtration (3.32 g, 99% Yield). 1H NMR (400.0 MHz, DMSO) δ 3.25 (s, 3H), 7.70 (br s, 2H), 8.00 (d, J=8.5 Hz, 2H), 8.35 (d, J=8.5 Hz, 2H), 9.03 (s, 1H) and 13.20 (br s, 1H) ppm; MS (ES+) 294.00.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US09334244B2 |
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| Source dataset | uspto-grants-2016_05 |
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| ORD ID | ord-25852f9fb8db4d41abcc008453c0a36c |
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| Source note | uspto-grants-2016_05 |
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