Studies on 1-Azabicyclo Compounds. XV. Oxidation of 1, 3, 4, 6, 11, 11a-Hexahydro-2H-pyrazino [1, 2-b] isoquinolin-1-one Derivatives with Mercuric Acetate, and Their Conversion into 1, 2, 3, 4, 5, 6, 7, 8-Octahydro-2-methyl-2, 5-benzodiazecine and Related Compounds
作者:HIDEO KATO、EIICHI KOSHINAKA、YOSHIO ARATA、MIYOJI HANAOKA
DOI:10.1248/cpb.21.2039
日期:——
Oxidation of hexahydro-2H-pyrazino [1, 2-b] isoquinolin-1-one (Ia) with mercuric acetate gave the α-aminocarbinol (II), which was characterized as the quaternary ammonium bromide (III). Mercuric acetate oxidation of the diamine (VII), however, afforded the lactam (VIII). Treatment of the methiodides (XIIa, XIIb, and XIIc) with lithium in liquid ammonia yielded the piperazinones (XIIIa, XIIIb, and XIIIc), respectively. On the other hand, reduction of the methiodides (XIIa, XIIb, and XIIc) with sodium amalgam furnished selectively the ten-membered aminolactams (XVIa, XVIb, and XVIc), respectively, in fair yields, which were converted to the corresponding ten-membered diamines (XVIIa, XVIIb, and XVIIc).
六氢-2H-吡嗪并[1, 2-b]异喹啉-1-酮(Ia)与醋酸汞的氧化反应生成了α-氨基醇(II),该化合物被表征为季铵溴化物(III)。然而,二胺(VII)与醋酸汞的氧化反应则生成了内酰胺(VIII)。将甲碘化物(XIIa、XIIb和XIIc)与锂在液氨中反应,分别得到了哌嗪酮(XIIIa、XIIIb和XIIIc)。另一方面,用钠汞合金还原甲碘化物(XIIa、XIIb和XIIc),选择性地得到了十元氨基内酰胺(XVIa、XVIb和XVIc),产率尚可,随后这些化合物被转化为相应的十元二胺(XVIIa、XVIIb和XVIIc)。