2,3-二氯-5,6-二氰基苯并醌(DDQ)与仲烯胺酮的反应令人惊讶地产生了2-氮杂-螺[4,5]癸二烯。该反应通过伯烷基加成基与腈基的环化而发生。DDQ与叔胺以及某些仲烯胺的反应生成3-氨基-苯并[ b ]呋喃衍生物。这不是通过迈克尔加成反应形成的,而是通过形成自由基自由基对并随后生成氧碳键生成苯并呋喃而形成的。对新产品进行了研究,以抑制纯化的人蛋白激酶CK2及其一般的细胞抑制活性。结果表明,活性最高的化合物是3-氨基-5-羟基-苯并呋喃衍生物11s,CK2的IC 50值为0.2μM。
Silica-supported antimony(III) chloride as an efficient heterogeneous catalyst for the synthesis of aminopropenones and 3-aminopropenoates under solvent-free conditions
摘要:
A convenient and efficient procedure has been developed for the synthesis of 3-aminoprop-2-en-1-ones and 3-aminoprop-2-enoates catalyzed by silica-supported antimony(III) chloride at room temperature under solvent-free conditions. The reaction takes a short time and ensures good to excellent yields of the products. Both aromatic and aliphatic amines and various 1,3-dicarbonyl compounds, including beta-ketoesters and beta-diketones, can be involved.