HuagongsheHuagongshe Chemistry Print Report · For research reference only
N,N-Dimethylaniline → 1,2-dihydro-4,4-dimethyl-9-(N-methylcarbamyloxy)-7-(3-methyl-2-octyl)-4H-thieno[2,3-c][1]benzopyran
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | N,N-Dimethylaniline | HCID 949 | — |
| Reactant | Methylamine | HCID 6329 | — |
| Reactant | Phosgene | HCID 6371 | — |
| Reactant | 2H-Thieno(2,3-c)(1)benzopyran-9-ol, 1,4-dihydro-7-(1,2-dimethylheptyl)-4,4-dimethyl- | HCID 213523 | — |
| Reactant | Carbonochloridate | HCID 21226386 | — |
| Product | 1,2-dihydro-4,4-dimethyl-9-(N-methylcarbamyloxy)-7-(3-methyl-2-octyl)-4H-thieno[2,3-c][1]benzopyran | HCID 21557909 | — |
Reaction Steps
By reacting 1,2-dihydro-4,4-dimethyl-9-hydroxy-7-(3-methyl-2-octyl)-4H-thieno[2,3-c][1]benzopyran with an equimolar amount of phosgene in the presence of dimethylaniline in a procedure similar to that described in Example 20 and reacting the resulting chloroformate with methylamine, there is obtained 1,2-dihydro-4,4-dimethyl-9-(N-methylcarbamyloxy)-7-(3-methyl-2-octyl)-4H-thieno[2,3-c][1]benzopyran.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US03940421 |
| Source dataset | uspto-grants-1976_02 |
| ORD ID | ord-53b2ce613d364c3b9efe4da95169dcaa |
| Source note | uspto-grants-1976_02 |