【摘 要】
：
In the presence of Nafion/SiO2 nanocomposite catalyst, the benzylation of aromatic compounds with benzyl chloride proceeded to afford diphenylmethane derivativ
【出 处】
：
Chinese Chemical Letters
论文部分内容阅读
In the presence of Nafion/SiO2 nanocomposite catalyst, the benzylation of aromatic compounds with benzyl chloride proceeded to afford diphenylmethane derivatives in high yields. The catalyst showed high catalytic activity not only for electron-rich aromatic compounds, but also for electron-poor aromatic compounds. Under identical conditions, the self-benzylation of benzyl chloride, and dibenzylation and/or multi-benzylation of aromatic compounds were negligible.
The presence of Nafion / SiO2 nanocomposite catalyst, the benzylation of aromatic compounds with benzyl chloride proceeded to afford diphenylmethane derivatives in high yields. The catalyst showed high catalytic activity not only for electron-rich aromatic compounds Under the same conditions, the self-benzylation of benzyl chloride, and dibenzylation and / or multi-benzylation of aromatic compounds were negligible.
其他文献
西瓜:原产非洲南部,五代时,由中亚经“丝绸之路”传入我国。先在新疆栽培,后传到中原。因瓜种来自我国西部,故名西瓜。葡萄:原产于欧洲,西亚和北非一带,汉朝张骞通西域时被
2008年2月18日,辽宁的消费者刘先生向本刊记者反映:他于2007年3月3日购买的飞越电脑存在质量问题,虽经两次维修但仍未解决。然而,当消费者按照有关规定要求厂家换货时却又遭
随着暑促高潮的到来,所有消费类IT产品厂商都开始把自己最好最新的产品与技术摆上了柜台,在CHIP排行榜上,它们带来了新一轮的冠军争夺战……
With the advent of Shucu, all
Five optimized geometries of F-?(H2O)n (n = 1, 2) were obtained with ab initio calculation at the B3LYP/6-311++G** level. The accurate intermonomer interaction
激光打印机PC World中国实验室目前的激光打印机,特别是价格不高的入门产品的普及程度越来越高,近期,柯尼卡美能达推出了旗下的一款定位于中小型企业、SOHO级用户的彩色激光
In this paper, the configurations of Boro-Nitride-Carbon nanotubes with BNC2 composition were optimized by ROHF method. According to the density functional theo
近年来,我园在中大班开展了“娃娃情趣日记”的活动.请幼儿以绘画的方式把每周生活中自己感兴趣或记忆深刻的事和物记录下来,并讲述自己的日记内容,而教师则及时用文字把它们
最近召开的全国经济体制改革工作会议确定了“十一五”以及今年的改革基调。会议带给人们的明确信息是,要在关系到经济社会发展全局的重大体制改革上取得突破性进展。国务院
一号文件以现代农业为目标，用意之一在于纠正新农村建设中存在的“急、偏、冒、同”之偏 “农业丰则基础强，农民富则国家盛，农村稳则社会安。”中共中央总书记、国家主席胡锦涛一年前对“三农”问题的高度概括成为2007年中共中央一号文件的第一句话。 2004年，中央一号文件在时隔18年后再次选择“三农”作为主要内容，在全国范围内取消农业税、100亿粮食直补的决定至今仍为人们津津乐道。其后的数年，中央
“十五”时期,在甘肃省委、省政府正确领导下, 全省各族人民坚持以邓小平理论和“三个代表”重要思想为指导,认真贯彻落实中央一系列方针政策,紧紧抓住西部大开发的战略机遇,