Phenanthrene derivatives were prepared by reacting an α,α‐dicyanoolefin with different α,β‐unsaturated carbonyl compounds resulting from Wittig reaction of ninhydrin and phosphanylidene or condensation of barbituric acid and an aldehyde. The easy procedure, mild and metal‐catalyst free, reaction conditions, good yields, and no need for chromatographic purifications are important features of this protocol
通过将茚三酮与亚膦基的Wittig反应或巴比妥酸与醛的缩合反应制得的α,α-二氰基烯烃与不同的α,β-不饱和羰基化合物反应制得菲衍生物。该方案的重要特点是操作简便,反应温和且无金属催化剂,反应条件好,收率高且无需色谱纯化。在光谱上证实了3型和5型产物的结构(IR,1 H和13 C NMR,以及EI MS)。提出了这种反应的合理机制(方案1)。