Directing Group Assisted Copper-Catalyzed Chemoselective O-Aroylation of Phenols and Enols Using Alkylbenzenes
摘要:
By using alkylbenzenes as aroyl surrogates, copper(II) catalyzed chemoselective O-aroylations of 1,3-dicarbonyl compounds and phenolic -OH ortho to carbonyl (-CHO, -COR) groups have been achieved. A dual mechanism operating in tandem for these transformations has been supported by a crossover experiment.
The present specification discloses honeybee repellents exhibiting repellent properties similar to 2-heptanone, compositions comprising such repellents, uses to repel a honeybee from a mammal, location, plant, structure treated of such repellents, and methods of treating a mammal, location, plant, structure by applying such repellents.