Synthesis of Pharmaceutical Intermediates by Toluene Benzylation over Heteropoly Acids on Different

来源 :天然气化学(英文版) | 被引量 : 0次 | 上传用户:1by1
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Selective formation of pharmaceutical intermediates like diphenylmethane, dimethyldiphenylmethane, benzyl toluene and benzoic acid by liquid phase, toluene benzylation with benzyl chloride as a benzylating agent, was systematically studied over plane clay (K-10, montmorillonite),plane H-Beta, plane MFI structured titanosilicate (TS-1) and heteropoly acids [HPA, namely dodecasupported on clay, H-beta and TS-1. The 20%TPA/Clay, 30%TPA/H-Beta and 30%TPA/TS-1, were observed to be the best catalyst samples over plane clay, plane H-Beta and plane TS-1. The catalyst samples are compared with respect to benzyl chloride conversion and selectivities for diphenylmethane,dimethyl-diphenylmethane, benzyl toluene and benzoic acid. The reaction follows the pseudo-first order rate power law model. The apparent rate constants are calculated and compared with the reported ones.
其他文献
目的 研究前期鉴定的5条丙型肝炎病毒(HCV)特异性细胞毒性T细胞(CTL)表位的HLA-A2限制性及其免疫学效应.方法 基于T2胞株,采用MHC-肽复合物稳定性试验研究前期鉴定的HCV特异
目的:研究信号转导和转录激活因子6(STAT6)在鼻息肉组织中的表达及其对嗜酸粒细胞(EOS)浸润聚集的作用,探讨其在鼻息肉发生中的可能作用。方法:选取符合纳入标准的鼻息肉患者
目的 探讨评估髋臼翻修过程中假体同定螺钉的安全区域,测试四象限系统的有效性.方法 2006年12月至2008年1月,制备11例(22髋)正常国人冷冻骨盆髋标本,剔除肌肉组织后每例标本
目的 研究肝纤维化过程中去甲肾上腺素各受体亚型表达的动态变化.方法 胆总管结扎法建立大鼠肝纤维化模型,HE,Masson染色观察肝脏病理形态学变化;免疫组织化学法检测肝星状细
2003-2008年期间,在国际原油价格大幅上升的影响下,广东省工业经济的发展和效益并未受到明显的价格传导影响,除农副产品加工业,石油加工业及石油开采业外,其它工业行业产品出
主要介绍6TXH-600型青核桃脱皮清洗机的结构、工作原理、技术参数、技术特点、影响核桃脱青皮的主要因素以及机具的试验应用与鉴定情况.
A new method of recovering maritime oil-spill based on electromagnetic force, the so-called MHD oil-spill recovery method was proposed in the IEECAS. The operat
Northern pike is regarded as a specialist in swimming acceleration. The force production mechanism of northern pike, Esox lucius, during its predation S-starts
Sodium implanted titanium films with different ion doses were characterized to correlate their ion implantation parameters. Native titanium films and ion implan
The mechanism of stress generation and propagation by detonation loading in five separate independent advance of ore breaking patterns is discussed in the paper