HuagongsheHuagongshe Chemistry Print Report · For research reference only
Triethylamine → 2-Methylcarbamoyloxy-2,3-dihydro-3,3-dimethylbenzofuran-5-yl methanesulphonate
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Triethylamine | HCID 8471 | — |
| Reactant | Methyl Isocyanate | HCID 12228 | — |
| Reactant | (2-Hydroxy-3,3-dimethyl-2H-1-benzofuran-5-yl) methanesulfonate | HCID 536079 | — |
| Solvent | Diethyl Ether | HCID 3283 | — |
| Product | 2-Methylcarbamoyloxy-2,3-dihydro-3,3-dimethylbenzofuran-5-yl methanesulphonate | HCID 13088562 | — |
Reaction Steps
To a solution of 2-hydroxy-2,3-dihydro-3,3-dimethylbenzofuran-5-yl methanesulphonate (12 parts) in ether (46 parts) was added methyl isocyanate (4.5 parts) and triethylamine (0.3 parts). The solution was left at room temperature for two hours and the solvent evaporated off. The crude product was recrystallised from a mixture of benzene and light petroleum to give 2-methylcarbamoyloxy-2,3-dihydro-3,3-dimethylbenzofuran-5-yl methanesulphonate, melting point 126°-127° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04345932 |
| Source dataset | uspto-grants-1982_08 |
| ORD ID | ord-659fdd95d4094167afcfd13342f44041 |
| Source note | uspto-grants-1982_08 |