Some fatty acids having an<i>O</i>-heterocycle in their terminal positions.<b>II</b>. ω-(3-Coumarinyl)alkanoic acids and ω-(2-chromonyl)alkanoic acids
作者:Seiji Yamaguchi、Miyuki Saitoh、Yoshiyuki Kawase
DOI:10.1002/jhet.5570280122
日期:1991.1
Some ω-3-coumarinyl)alkanoic acids 1a, n = 3-6 were synthesized by cyclization of corresponding ethyl o-formylphenyl alkanedioate 3 with DBU followed by hydrolysis. By a similar cyclization, some ω-(2-chromonyl)alkanoic acids 2a, n = 3-6 were also obtained from the cyclization of corresponding o-acetylphenyl ethyl alkanedioate 4.
通过用DBU将相应的邻-甲酰基苯基链烷二酸乙酯3环化,然后水解,合成了一些ω-3-香豆基)链烷酸1a,n = 3-6 。通过类似的环化,还从相应的邻乙酰基苯基乙基链烷二酸酯4的环化反应中获得了一些ω-(2-苯甲酰基)链烷酸2a,n = 3-6 。