Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Chloroform | HCID 6212 | — |
| Reactant | Trifluoromethanesulfonic acid | HCID 62406 | — |
| Reactant | rel-Ethyl (1R,2S)-2-hydroxycyclopentanecarboxylate | HCID 2724648 | — |
| Reactant | HCID 86660663 | HCID 86660663 | — |
| Solvent | Hexane | HCID 8058 | — |
| Product | HCID 58575621 | HCID 58575621 | — |
Reaction Steps
To a mixture of 1.00 g of ethyl cis-2-hydroxy-1-cyclopentane carboxylate, 8.00 mL of chloroform, 16.0 mL of normal hexane, and 1.77 mL of 3,4-dichlorobenzyl-2,2,2-trichloroacetimidate was added 0.335 mL of trifluoromethane sulfonic acid at room temperature under a nitrogen atmosphere, followed by stirring for 3 hours. The insoluble materials were removed by filtration, and to the filtrate was added a saturated aqueous sodium hydrogen carbonate solution under ice-cooling to adjust the pH to about 7, followed by extraction with chloroform. The organic layer was dried over anhydrous magnesium sulfate, and then the solvent was evaporated. The obtained residue was purified by silica gel column chromatography (normal hexane/ethyl acetate) to obtain 1.27 g of ethyl cis-2-benzyloxy-1-cyclopentane carboxylate as a colorless oily substance.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US08674096B2 |
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| Source dataset | uspto-grants-2014_03 |
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| ORD ID | ord-f956037ba958440793975cd012d45396 |
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| Source note | uspto-grants-2014_03 |
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