Structure and Reactivity of Bicyclo[2.2.1]hept-2-ene-endo-5,endo-6-dicarboxylic (endic) Acid Hydrazide
作者:L.I. Kas'yan、I.N. Tarabara、Ya.S. Bondarenko、S.V. Shishkina、O.V. Shishkin、V.I. Musatov
DOI:10.1007/s11178-005-0305-9
日期:2005.8
Establishing of the structure of hydrazinolysis product obtained from bicyclo[2.2.1]hept-2-ene-endo-5, endo-6-dicarboxylic (endic) acid was performed by preparation of the compound under alternative conditions followed by comparison of the characteristics and spectral parameters of the resulting substances, and also by quantum-chemical calculations by the density functional method of the chemical shifts in 1H and 13C NMR spectra of different reaction products. The X-ray diffraction analysis of the hydrazide was also carried out. The compound obtained was assigned a structure of N-aminobicyclo[2.2.1] hept-2-ene-endo-5,endo-6-dicarboximide. The products were prepared by its reactions with arylsulfonyl chlorides, benzoyl chlorides, m-tolyl and p-toluene-sulfonyl isocyanates, phenyl isothiocyanate, with o-nitrobenzaldehyde, and oxiranes (1,2-epoxycyclohexane and 2,3-epoxypropylcarbazole). The aromatic sulfonamides, carboxamides, and ureas were epoxidized by performic acid obtained in situ from the formic acid and hydrogen peroxide. Products of [3+2]-cycloaddition of aryl azides to the strained double bond in the N-aminobicyclo[2.2.1] hept-2-ene-endo-5,endo-6-dicarboximide and its derivatives. The structures of compounds obtained were confirmed by their IR, 1H and 13C NMR spectra.
从双环[2.2.1]庚-2-烯-内-5,内-6-二羧酸(endic酸)获得的肼解产物的结构确立是通过在不同条件下合成该化合物,随后比较所得到物质的特性和光谱参数,以及采用密度泛函方法进行量子化学计算,分析不同反应产物在1H和13C NMR光谱中的化学位移。同时还进行了该肼类化合物的X射线衍射分析。所获得的化合物被确定为N-氨基双环[2.2.1]庚-2-烯-内-5,内-6-二羧亚胺。该化合物与芳基磺酰氯、苯甲酰氯、m-甲基苯磺酰异氰酸酯、对甲苯磺酰异氰酸酯、苯异硫氰酸酯、o-硝基苯甲醛和环氧化物(1,2-环氧环己烷和2,3-环氧丙基咔唑)反应得到各类产物。芳香族磺胺、羧酰胺和脲类化合物通过在原位生成的过形式酸进行环氧化处理。合成的N-氨基双环[2.2.1]庚-2-烯-内-5,内-6-二羧亚胺及其衍生物与芳基叠氮化合物的[3+2]环加成反应的产物也得到了报道。所得化合物的结构通过其红外光谱、1H和13C NMR光谱得到了确认。