HuagongsheHuagongshe Chemistry Print Report · For research reference only
Potassium Carbonate → Ethyl 2-phenyl-benzothiazole-6-carboxylate
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Potassium Carbonate | HCID 11430 | — |
| Reactant | Phenylboronic Acid | HCID 66827 | — |
| Reactant | Ethyl 2-bromo-6-benzothiazolecarboxylate | HCID 12067225 | — |
| Catalyst | Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+) | HCID 178418228 | — |
| Solvent | Water | HCID 962 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Solvent | 1,4-Dioxane | HCID 31275 | — |
| Product | Ethyl 2-phenyl-benzothiazole-6-carboxylate | HCID 50849803 | 73.9% |
Reaction Steps
A mixture of ethyl 2-bromo-benzothiazole-6-carboxylate 20d (300 mg, 1.05 mmol), phenylboronic acid (192 mg, 1.57 mmol), K2CO3 (188 mg, 1.36 mmol) and Pd(dppf)Cl2.CH2Cl2 (43 mg, 0.05 mmol) in dioxane (2 mL) and H2O (0.4 mL) was heated at 120° C. for 25 min in a microwave reactor. The reaction mixture was diluted with CH2Cl2, washed with H2O, dried over Na2SO4, and concentrated. Purification by flash column chromatography (silica gel, 15% EtOAc/heptane) gave compound 20e (220 mg).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08748417B2 |
| Source dataset | uspto-grants-2014_06 |
| ORD ID | ord-dd90525ead1a4dc2b2955acf09f86e2a |
| Source note | uspto-grants-2014_06 |