Syntheses of chiral nopinane-annelated pyridines of C 2 and D 2 -symmetry: X-ray structures of the fused derivatives of 4,5-diazafluorene, 4,5-diaza-9 H -fluoren-9-one, and 9,9’-bi-4,5-diazafluorenylidene
作者:Eugene S. Vasilyev、Irina Yu. Bagryanskaya、Alexey V. Tkachev
DOI:10.1016/j.mencom.2017.03.006
日期:2017.3
Reaction of (+)-pinocarvone oxime with 2-morpholinocyclopent-2-enone and FeCl3·6H2O affords chiral C2-symmetric fused derivative of 4,5-diazafluorene, whose oxidation with SeO2 gives nopinane-annelated derivatives of 4,5-diaza-9Hfluoren- 9-one (C2-symmetry) and of 9,9’-bi-4,5-diazafluorenylidene (D2-symmetry). Structures of the compounds synthesized were proved by X-ray crystallography.
(+)-松香酮肟与2-吗啉代环戊-2-烯酮和FeCl3·6H2O的反应制得4,5-二氮杂芴的手性C2对称稠合衍生物,其与SeO2的氧化得到4,5-二氮杂戊烯基-壬烷氧基化的衍生物。 9 H芴-9-1(C 2对称)和9,9'-bi-4,5-二氮杂芴基亚烷基(D 2对称)。通过X射线晶体学证明合成的化合物的结构。