Simultaneous formation of isoquinoline and 1-azetine derivatives via photoacetyl migration of substituted α-dehydrophenylalanine
作者:Kanji Kubo、Satoru Yaegashi、Katsuyoshi Sasaki、Tadamitsu Sakurai、Hiroyasu Inoue
DOI:10.1016/0040-4039(96)01276-2
日期:1996.8
Irradiation of substituted α-dehydrophenylalanine in methanol or acetonitrile with Pyrex-filtered light was found to give isoquinoline and 1-azetine derivatives in relatively good yields, which may be formed via 1,5-acetyl shift from the (Z)-isomer and 1,3-acetyl migration from the (E)-isomer, respectively. The photoreaction in methanol afforded the azetine in preference to the isoquinoline, while the
发现用派热克斯滤光片在甲醇或乙腈中辐照取代的α-脱氢苯丙氨酸可得到相对较好的产率的异喹啉和1-Aztine衍生物,它们可以通过从(Z)-异构体和1转化为1,5-乙酰基而形成。(-E)-异构体分别发生,3-乙酰基迁移。在甲醇中的光反应提供的氮杂环丁烷优先于异喹啉,而在乙腈中获得相反的结果。