Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Water | HCID 962 | — |
| Reactant | Sodium Hydroxide | HCID 14798 | — |
| Reactant | HCID 14838442 | HCID 14838442 | — |
| Reactant | Aluminium lithium hydride | HCID 21226445 | — |
| Solvent | Diethyl Ether | HCID 3283 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | HCID 22420297 | HCID 22420297 | 98.3% |
Reaction Steps
At room temperature and while stirring, a solution of 16.91 g (82 mmol) of 2-methoxycarbonylmethylchroman in 150 ml of absolute tetrahydrofuran is added dropwise within a period of 30 minutes to a suspension of 3.11 g (82 mmol) of lithium aluminium hydride in 150 ml of absolute diethyl ether. Stirring is continued for a further 16 hours at room temperature and then the whole is carefully decomposed with 3.1 ml of water, 3.1 ml of sodium hydroxide solution (15% strength) and 9.3 ml of water. The precipitate formed is filtered off with suction and the filtrate is concentrated by evaporation in vacuo. The oily residue is dissolved in diethyl ether. The ethereal solution is washed with water, dried over sodium sulphate and concentrated by evaporation in vacuo. 14.36 g (98.3%) of 2-(2-hydroxyethyl)chroman are obtained in the form of a colourless oil.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US05112855 |
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| Source dataset | uspto-grants-1992_05 |
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| ORD ID | ord-5c2c0230b99442b1961cda32f8d0ab18 |
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| Source note | uspto-grants-1992_05 |
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