Alkene Ozonolysis in the Presence of Diazo Functionality: Accessing an Intermediate for Squalestatin Synthesis
作者:Hasanain A. A. Almohseni、Younes Fegheh-Hassanpour、Tanzeel Arif、David M. Hodgson
DOI:10.1055/s-0039-1690180
日期:2019.11
cycloaddition between diazo and alkene functionality, and the tolerance of α-substituted α-diazoesters towards ozone in the presence of an alkene, led to chemoselective alkene ozonolysis of an ε-unsaturated-α-diazoester to give a key racemic diazoketone for the synthesis of 6,7-dideoxysqualestatin H5. Studies on both the propensity for intramolecular cycloaddition between diazo and alkene functionality, and the
抽象的 对重氮和烯烃官能团之间分子内环加成的倾向以及在烯烃存在下α-取代的α-重氮酸酯对臭氧的耐受性的研究都导致ε-不饱和α-重氮酸酯的化学选择性烯烃臭氧分解,从而得到关键的外消旋重氮酮,用于合成6,7-二脱氧角鲨烯抑制素H5。 对重氮和烯烃官能团之间分子内环加成的倾向以及在烯烃存在下α-取代的α-重氮酸酯对臭氧的耐受性的研究都导致ε-不饱和α-重氮酸酯的化学选择性烯烃臭氧分解,从而得到关键的外消旋重氮酮,用于合成6,7-二脱氧角鲨烯抑制素H5。