γ-lactonization of homopropargyl alcohols via an alkyne deprotonation/boronation/oxidation sequence has been developed. Oxidation of the generated alkynyl boronate affords the corresponding ketene intermediate, which is trapped by the adjacent hydroxy group to furnish the γ-lactone. We have optimized the conditions as well as examined the substrate scope and synthetic applications of this efficient one-pot
已经开发了通过
炔烃去质子化/
硼化/氧化顺序的一锅法
丙炔醇的γ-内酯化。氧化生成的炔基
硼酸酯可得到相应的
乙烯酮中间体,该中间体被相邻的羟基捕获,从而提供了γ-内酯。我们优化了条件,并研究了这种有效的一锅内酯化的底物范围和合成应用。