【摘要】 研究了均相氧化羰化法合成碳酸二苄酯,并通过萃取法对其进行了有效分离,得到纯度为99.7%的产物。利用红外光谱,紫外光谱,核磁共振氧谱以及质谱对其结构进行了鉴定,确定产物为碳酸二苄酯,并对其光谱数据进行了较为详尽的解析。更多还原

【Abstract】 Dibenzyl carbonate(DBC) was synthesized by oxidative carbonylation of benzyl alcohol in homogeneous system and the purification by extraction was studied. The product DBC was obtained with a purity of 99 .7 % . The structure of purified DBC was identified by IR, UV, MS,1HNMR spectra. The principal IR absorption bands were assigned at 1476 and 1261 cm-1 which were originated from the keto C=O and carboxy-OCO2- groups. The main peaks in the MS spectrum of the product DBC were 180,165,151,107,91,79,77,65,51,39.The split mechanism of mass spectrum of compound DBC was also discussed. In the ’HNMR spectrum of DBC,based on the integral curves from low to high field of the figure, the quantity ratio of the H atoms was 5:2, in accordance with the structure of DBC.更多还原