ヘテロ環化合物の研究(第6報) : 2-(5-Carbomethoxy-2-furyl)vinyl Benzene類の合成ならびに紫外線吸収スペクトルについて
1968 年 88 巻 8 号 p. 977-983
詳細
1968 年 88 巻 8 号 p. 977-983
2-[(5-Methoxycarbonyl-2-furyl)vinyl]benzenes were synthesized by the Wittig reaction of 5-methoxycarbonyl-2-furfuryl triphenyl phosphonium chloride and various benzaldehydes or ketones. In the synthesis of 2-[(5-methoxycarbonyl-2-furyl)-1-(5-nitro-2-furyl)vinyl]benzene, two sudstances of mp 146-147° and of mp 155-157°, assumed to be stereoisomers, were obtained. These substances formed the corresponding stereoisomers during the process of hydrolysis, chlorination with thionyl chloride, and amination. The determination of cis or trans forms of these isomers was made through ultraviolet absorption and nuclear magnetic resonance spectra.
