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Carbon Tetrachloride → tert-Butyl 4-chloro-8-methyl-5,8-dihydropyrido[3,4-d]pyrimidine-7(6H)-carboxylate
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Carbon Tetrachloride | HCID 5943 | — |
| 反応物 | Triphenylphosphine | HCID 11776 | — |
| 反応物 | 8-methyl-4-oxo-4,5,6,8-tetrahydro-3H-pyrido[3,4-d]pyrimidine-7-carboxylic acid tert-butyl ester | HCID 136158780 | — |
| 溶媒 | 1,2-Dichloroethane | HCID 11 | — |
| 生成物 | tert-Butyl 4-chloro-8-methyl-5,8-dihydropyrido[3,4-d]pyrimidine-7(6H)-carboxylate | HCID 59394669 | — |
反応手順
A combination of 8-methyl-4-oxo-4,5,6,8-tetrahydro-3H-pyrido[3,4-d]pyrimidine-7-carboxylic acid tert-butyl ester (374 mg, 1.41 mmol), triphenylphosphine (739 mg, 2.82 mmol) and carbon tetrachloride (409 uL, 4.23 mmol) and 1,2-DCE (10 mL) are heated at 70° C. for 6 h. The solution is then concentrated in vacuo and the residue separated via FCC (5-60% EtOAc/heptane). MS (ESI) m/z 284.2 (M+H).
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US08541432B2 |
| 出典データセット | uspto-grants-2013_09 |
| ORD ID | ord-42243e31106248d9ba24c74d8de6858e |
| 出典メモ | uspto-grants-2013_09 |