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Tetrafluoroboric acid → 1-(2,6-Dimethylphenyl)-3-(1,5-dimethyl-2-pyrrolidylidene)urea
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | Tetrafluoroboric acid | HCID 28118 | — |
| 反応物 | 2,6-Xylyl isocyanate | HCID 98787 | — |
| 反応物 | 1,5-Dimethyl-2-iminopyrrolidine | HCID 12449024 | — |
| 溶媒 | Benzene | HCID 241 | — |
| 生成物 | 1-(2,6-Dimethylphenyl)-3-(1,5-dimethyl-2-pyrrolidylidene)urea | HCID 54555224 | — |
反応手順
The HBF4 salt of 1,5-dimethyl-2-iminopyrrolidine (6.75 g.; 0.0337 mole) is converted to free base in benzene in the usual manner. Then 4.96 g. (0.0337 mole) of 2,6-dimethylphenylisocyanate, dissolved in anhydrous benzene, is added. The reaction mixture is stirred for 2 hours and then the solvent is evaporated in vacuo leaving an oily residue which eventually crystallizes. Recrystallization from ethyl acetate gives the product, 1-(2,6-dimethylphenyl)-3-(1,5-dimethyl-2-pyrrolidylidene)urea, m.p. 120°-122° C.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US03998958 |
| 出典データセット | uspto-grants-1976_12 |
| ORD ID | ord-9e1a82942fec42c99e8ba3f2b044f9a0 |
| 出典メモ | uspto-grants-1976_12 |