作者:Akio MANABE、Hirotaka TAKANO、Kunihiko FURUZAWA、Kazunori YANAGI、Yoshio HISADA、Shizuya TANAKA
DOI:10.1271/bbb.66.2243
日期:2002.1
Several 1-(α-tert-butylcinnamoyl)imidazoles were prepared to examine their fungicidal activity. The (Z)-4-chlorocinnamoyl derivative was prepared from (anti)-2-tert-butyl-3-(4-chlorophenyl)-3-hydroxypropanoic acid by treating with 1,1′-carbonyldiimidazole and a subsequent β-elimination reaction at an elevated temperature. The (Z)-isomer of the 4-chlorocinnamoyl derivative showed good fungicidal activity against Erysiphe graminis and Botrytis cinerea in pot tests, whereas the corresponding (E)-isomer derived from the (Z)-isomer through photoisomerization was much less active.
制备了若干1-(α-叔丁基肉桂酰基)咪唑,以考察其杀菌活性。通过与1,1′-羰基二咪唑反应并随后在高温下进行β-消除反应,从(反)-2-叔丁基-3-(4-氯苯基)-3-羟基丙酸制备了(Z)-4-氯肉桂酰衍生物。在盆栽试验中,(Z)-4-氯肉桂酰衍生物的Z-异构体对禾白粉菌和葡萄孢菌表现出良好的杀菌活性,而通过光异构化从(Z)-异构体制备的相应(E)-异构体活性则低得多。