Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Sodium Hydroxide | HCID 14798 | — |
| Reactant | Bromomethyl methyl ether | HCID 83093 | — |
| Reactant | 7-hydroxy-2,2-dimethyl-3,4-dihydro-2H-1-benzopyran-4-one | HCID 600902 | — |
| Catalyst | Benzyl triethylammonium chloride | HCID 66133 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Product | HCID 22158838 | HCID 22158838 | 90% |
Reaction Steps
A mixture of 20 ml of 10% sodium hydroxide solution, 50 ml of dichloro methane, 0.5 g (2 millimoles) of triethyl benzyl ammonium chloride and 0.9 g (10 millimoles) of 7-hydroxy-2,2-dimethyl-4-chromanone is intensively stirred at 20° C. for 30 minutes. To the mixture 3.1 g (2 ml, 25 millimoles) of bromomethyl-methyl-ether are added. The reaction mixture is stirred for a further 30 minutes, the organic phase is separated, washed twice with 50 ml. of water each, dried and the solvent is removed. The residue is crystallized from 70% ethanol. Thus 2.1 g of the desired compound are obtained, yield 90%. Mp.: 77°-79° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US04866089 |
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| Source dataset | uspto-grants-1989_09 |
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| ORD ID | ord-6dba374e99f04aedba815f853c222418 |
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| Source note | uspto-grants-1989_09 |
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