HuagongsheHuagongshe Chemistry Print Report · For research reference only
Acetone → 2,6-Dimethyl-3-methoxycarbonyl-4-(3-nitrophenyl)-5-(3-[4-(2-propoxyethyl)phenoxy]propoxycarbonyl)-1,4-dihydropyridine
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Acetone | HCID 180 | — |
| Reactant | Potassium Carbonate | HCID 11430 | — |
| Reactant | 2,6-Dimethyl-3-carbomethoxy-4-(3-nitrophenyl)-5-(3-[4-(2-hydroxyethyl)phenoxy]propoxycarbonyl)-1,4-dihydropyridine | HCID 14178553 | — |
| Product | 2,6-Dimethyl-3-methoxycarbonyl-4-(3-nitrophenyl)-5-(3-[4-(2-propoxyethyl)phenoxy]propoxycarbonyl)-1,4-dihydropyridine | HCID 20129603 | — |
Reaction Steps
A solution of 2,6-dimethyl-3-carbomethoxy-4-(3-nitrophenyl)-5-(3-[4-(2-hydroxyethyl)phenoxy]propoxycarbonyl)-1,4-dihydropyridine (125 g, 0.252 moles) in acetone (700 mL) is stirred at reflux for 8 hours with K2CO3 (48 g, 0.35 mol) and n-bromopropane (61.5 g, 0.5 mol). After evaporation of the solvent, the crude product is purified by flash chromatography (solvent=93:7 CH2Cl2 :acetone) to yield 2,6-dimethyl-3-methoxycarbonyl-4-(3-nitrophenyl)-5-(3-[4-(2-propoxyethyl)phenoxy]propoxycarbonyl)-1,4-dihydropyridine as an oil.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04761420 |
| Source dataset | uspto-grants-1988_08 |
| ORD ID | ord-ee8c8ea67b0843c3a47fa903363b793d |
| Source note | uspto-grants-1988_08 |