Ti / Zn介导的一系列4-oxo-4 H -chromene-2-carbaldehydes的McMurry偶联提供了不同寻常的化学选择性CH 2 -CH 2系双色酮。对反应参数和试剂的研究进一步证实,出乎意料的偶联产物的形成对4-氧代-4 H-亚甲基-2-甲醛具有选择性。该方法论证明了合成双色酮的简单有效途径。
A new series of chromone-2,3-dihydroquinazolin-4-one hybrid heterocycles are synthesized from chromone-2carbaldehydes by coupling with 2-aminoarylamides and hydrazides without oxidizing agents. The newly synthesized products exhibited moderate to good antimicrobial activity.