case, it was also found that the generated 2-oxazolidinones were tautomerized into the corresponding 2-oxazolones due to the basicity of TBAF. In addition, we performed the synthesis of quinazoline-2,4(1H,3H)-dione from 2-aminobenzonitrile and CO2 by using TBAF as a catalyst.
通过使用
氟化四丁基
铵(TBAF)作为催化剂,具有内部
炔烃的
炔丙基胺与CO 2的各种羧基环化反应进行,得到相应的2-
恶唑烷酮。在这种情况下,还发现由于TBAF的碱性,所产生的2-
恶唑烷酮被互变异构成相应的2-
恶唑酮。此外,我们以TBAF为催化剂,由2-
氨基
苄腈和CO 2合成了
喹唑啉-2,4(1 H,3 H)-二酮。