Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Sulfolane | HCID 31347 | — |
| Reactant | Thiourea | HCID 2723790 | — |
| Reactant | HCID 20245704 | HCID 20245704 | — |
| Product | HCID 9846824 | HCID 9846824 | — |
Reaction Steps
The reactions described in Example 1(a) were repeated, except that 1.5 g of ethyl 3-[4-(6-acetoxy-2,7-dimethylchroman-2-ylmethoxy)phenyl]-2-chloropropionate, 300 mg of thiourea and 2 ml of sulfolane were heated at 120° C. for 2 hours. The reaction mixture was then purified by adding diethyl ether to the reaction mixture, and distilling off the solvent to leave a residue. This residue was purified by column chromatography through silica gel eluted first with a 9:1 by volume mixture of benzene and ethyl acetate, to give the title compound.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US04572912 |
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| Source dataset | uspto-grants-1986_02 |
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| ORD ID | ord-939d92b40457425ea0d80d48871e948e |
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| Source note | uspto-grants-1986_02 |
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