Reaction of lithiated senecioamide and related compounds with benzynes : Efficient syntheses of naphthols and naphthoquinones.
作者:MITSUAKI WATANABE、SADAYOSHI HISAMATSU、HIROSHI HOTOKEZAKA、SUNAO FURUKAWA
DOI:10.1248/cpb.34.2810
日期:——
The reaction of lithated N, N-diethylsenecioamide and N, N-diethy-3-phenlisocrotonamide with methoxy-substituted benzynes, generated in situ from methoxy-substituted halobenzenes, gave regiospecifically various 3-methyl- and 3-phenyl-naphthol derivatives in a one-pot process. Methoxy-substituted 3-methyl-1-naphthols thus obtained were easily converted into various 1, 4-naphthoquinones and 1, 2-naphthoquinones including biologically active natural products such as plumbagin, plumbagin methylether, 5, 6-dimethoxy-2-methyl-1, 4-naphthoquinone, and 8-methoxy-3-mathyl-1, 2-naphthoquinone.
锂化的N,N-
二乙基硒次
酰胺和
N,N-二乙基-3-
苯基异
巴豆酰胺与甲
氧基取代的
苯炔反应,这些
苯炔是通过甲
氧基取代的卤代
苯现场生成的,从而在一个锅中特异性地合成了各种3-
甲基和3-
苯基
萘酚衍
生物。由此获得的甲
氧基取代的
3-甲基-1-萘酚很容易转化为各种
1,4-萘醌和
1,2-萘醌,包括具有
生物活性的
天然产物,如白花丹素、白花丹素
甲醚、5,6-二甲
氧基-
2-甲基-1,4-萘醌和8-甲
氧基-3-
甲基-
1,2-萘醌。