中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
2,3-二溴丁二酸 | 2,3-dibromosuccinic acid | 526-78-3 | C4H4Br2O4 | 275.881 |
Several diesters of dicarboxylic acids with pendant polyalkylpiperidine structural units were prepared from α-bromo and α,α'-dibromo substituted aliphatic dicarboxylic acid diesters by a nucleophilic replacement reaction with 2,2,6,6-tetramethyl-4-hydroxypiperidine, 1,2,2,6,6-pentamethyl-4-hydroxypiperidine, and 2,2,6,6-tetramethyl-4-aminopiperidine, by a nucleophilic addition of amino derivative to the α,β-unsaturated dicarboxylic acid diester and by an acid catalyzed condensation of 2,2,6,6-tetramethyl-4-oxopiperidine with diethyl bis(hydroxymethyl)malonate.