HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1181350Generated: November 2, 2026
Propanoic acid, 2-bromo-2-methyl-, ethyl ester → 2-Methyl-2-pyrrolidin-1-yl-propionic acid ethyl ester
https://huagongshe.com/reaction/1181350
Participants
| Role | Name | HCID | Charge |
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| Reactant | Propanoic acid, 2-bromo-2-methyl-, ethyl ester | HCID 11745 | — |
| Reactant | Pyrrolidine | HCID 31268 | — |
| Product | 2-Methyl-2-pyrrolidin-1-yl-propionic acid ethyl ester | HCID 14044375 | 74% |
Reaction Steps
Ethyl 2-bromo-2-methylpropanoate (0.6800 g, 3.4861 mmol) was taken up in pyrrolidine (4 mL) and heated to 70° C. The reaction was stirred for 18 h and then concentrated. The residue was taken up in EtOAc (100 mL) and washed with water (1×100 mL), dried over MgSO4, filtered and concentrated to afford 0.4754 g (2.5697 mmol, 74%) of the product. 1H NMR (CDCl3) δ 4.16 (q, 2H, J=7.1 Hz), 2.76 (bs, 4H), 1.76 (bs, 4H), 1.36 (s, 6H), 1.27 (t, 2H, J=7.1 Hz).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US07285557B2 |
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| Source dataset | uspto-grants-2007_10 |
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| ORD ID | ord-5b23f3f246ae4adc84f03f1781c40eff |
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| Source note | uspto-grants-2007_10 |
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