Activation of Iodosobenzene by Catalytic Tetrabutylammonium Iodide and Its Application in the Oxidation of Some Isoquinoline Alkaloids
作者:Wei-Jan Huang、Om V. Singh、Chung-Hsiung Chen、Sheng-You Chiou、Shoei-Sheng Lee
DOI:10.1002/1522-2675(200204)85:4<1069::aid-hlca1069>3.0.co;2-i
日期:2002.4
the presence of a catalytic amount of tetrabutylammonium iodide in various solvents afforded N-methyl-2H-3,4-dihydroisoquinol-1-ones in almost quantitative yields. The application of this finding to the oxidation of other isoquinolines, including tetrahydroisoquinolines, lycorine diacetate, and benzyltetrahydroisoquinolines, also afforded the corresponding lactams in good yields, however, accompanied
在催化量的碘化四丁基铵存在下,在各种溶剂中用碘基苯氧化 N-甲基四氢异喹啉,以几乎定量的收率得到 N-甲基-2H-3,4-二氢异喹啉-1-酮。将该发现应用于其他异喹啉的氧化,包括四氢异喹啉、石蒜碱二乙酸酯和苄基四氢异喹啉,也以良好的收率提供了相应的内酰胺,但伴随着一些少量的副产物。在相似条件下,四氢小檗碱主要产物为重排化合物小檗醛,并辅以8-氧代小檗碱和小檗碱。