Plant Coumarins. 2. Beckmann Rearrangement of Oreoselone E- and Z-Oximes
作者:I. Yu. Bagryanskaya、Yu. V. Gatilov、S. A. Osadchii、A. A. Martynov、M. M. Shakirov、E. E. Shul'ts、G. A. Tolstikov
DOI:10.1007/s10600-006-0006-9
日期:2005.11
Oximation of oreoselone to produce a mixture the E- and Z-oximes was investigated. The crystal and molecular structures of oreoselone Z-oxime and the Beckmann rearrangement product of oreoselone E- or Z-oximes and PCl5, 7-(1-chloro-2-methylpropoxy)-2-oxo-2H-1-benzopyran-6-carbonitrile, were established by XSA. Hydrolysis of the latter produced 7-hydroxy-2-oxo-2H-1-benzopyran-6-carbonitrile.
研究了奥雷塞隆的氧化反应,以生成E-和Z-肟的混合物。通过XSA确定了奥雷塞隆Z-肟和奥雷塞隆E-或Z-肟与五氯化磷的贝克曼重排产物的晶体和分子结构。后者的水解产物为7-羟基-2-氧代-2H-1-苯并吡喃-6-甲腈。