HuagongsheHuagongshe Chemistry Print Report · For research reference only
Cesium carbonate → 6,8-Dichloro-4-(3-chloropropyl)-7-methyl-4H-benzo[1,4]oxazin-3-one
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Cesium carbonate | HCID 10796 | — |
| Reactant | 1-Chloro-3-iodopropane | HCID 81363 | — |
| Reactant | 6,8-Dichloro-7-methyl-4H-benzo[1,4]oxazin-3-one | HCID 68912189 | — |
| Solvent | Ethylacetate heptane | HCID 21899848 | — |
| Product | 6,8-Dichloro-4-(3-chloropropyl)-7-methyl-4H-benzo[1,4]oxazin-3-one | HCID 68912558 | 79.1% |
Reaction Steps
6,8-Dichloro-7-methyl-4H-benzo[1,4]oxazin-3-one (81MF2225a) (2.33 g, 10.0 mmol), Cs2CO3 (4.88 g, 15.0 mmol) and 3-chloro-1-iodopropane (2.25 g, 11.0 mmol) were mixed according to GP6. CC (SiO2; Heptane/EtOAc 10:1-5) gave the title compound (81MF2225b) (2.44 g, 79%). 1H NMR (CDCl3) δ 7.02 (s, 1H), 4.67 (s, 2H), 4.06 (t, J=7.2 Hz, 2H), 3.62 (t, J=6.2, 2H), 2.43 (s, 3H), 2.18-2.10 (m, 2H); 13C NMR (CDCl3) δ 163.7, 140.5, 130.3, 128.3, 127.6, 124.1, 113.5, 67.9, 42.2, 39.3, 30.0, 17.2.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US07307075B2 |
| Source dataset | uspto-grants-2007_12 |
| ORD ID | ord-6919305d50504d0e8434295b440bbb37 |
| Source note | uspto-grants-2007_12 |