Studies on seven-membered heterocycles. XXXI. Synthesis of 1,4-oxazepinones and 1,4-diazepinones from 2-pyridones and their conversion into fully unsaturated 1,4-oxazepines and 1,4-diazepines.
Optically active photopyridones possessing synthetic versatility are
obtained conveniently by lipase-catalysed enantioselective acylation or
hydrolysis of racemic photopyridones, and the absolute configurations
are determined by chemical correlation, X-ray crystallographic and CD
spectral analyses.
通过脂肪酶催化外消旋光吡啶酮的对映体选择性酰化或水解,可方便地获得具有合成多功能性的光学活性光吡啶酮,并通过化学相关性、X 射线晶体学和 CD 光谱分析确定其绝对构型。
Sato, Eisuke; Ikeda, Yoshiya; Kanaoka, Yuichi, Liebigs Annalen der Chemie, 1989, p. 781 - 788
作者:Sato, Eisuke、Ikeda, Yoshiya、Kanaoka, Yuichi
DOI:——
日期:——
Matsushima, Ryoka; Terada, Kazuhide, Journal of the Chemical Society. Perkin transactions II, 1985, p. 1445 - 1448
作者:Matsushima, Ryoka、Terada, Kazuhide
DOI:——
日期:——
Photochemical Cycloaddition Reagents for Rigidly Attaching the 1,4-Dimethoxynaphthalene Chromophore to Scaffold Alkenes
作者:Davor Margetic、Richard A. Russell、Ronald N. Warrener
DOI:10.1021/ol006571d
日期:2000.12.1
The norbornanecyclobutene epoxides 1a-1c containing a fused 1,4-dimethoxynaphthalene chromophore have been reacted with cyclobutenes, cyclohexenes, norbornenes, 7-isopropylidenenorbornenes, 7-azanorbornenes, and other cyclic or electron-deficient alkenes at room temperature to form 1:1 adducts in stereoselective 1,3-dipolar cycloaddition reactions; alkynes can also participate in this reaction, The ability to form 2:1 adducts has also been demonstrated, thereby opening up opportunities for preparing functionalized products with large chromophore separations.