三氯化铁催化合成丁醛1,2丙二醇缩醛.pdf

  1. 1、本文档共6页,可阅读全部内容。
  2. 2、有哪些信誉好的足球投注网站(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
  3. 3、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载
  4. 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
查看更多
三氯化铁催化合成丁醛1,2丙二醇缩醛

RARE METALS, Vol. 27, No. 1, Feb 2008, p. 89 Catalytic synthesis of acetals and ketals with H PW O /PAn 3 12 40 a, b a a b YANG Shuijin , ZHANG Yijun , DU Xinxian , and Philippe G. Merle a Hubei Key Laboratory of Bioanalytical Technique, Department of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi 435002, China b Department of Chemistry and Biochemistry, Concordia University, Montreal H4B 1R6, Canada Received 28 September 2006; received in revised form 21 November 2006; accepted 28 November 2006 Abstract A new environmental friendly catalyst H3PW12O40/PAn was prepared and identified by means of FT-IR, XRD, and TG/DTA. The optimum conditions have been found; that is, the mass ratio of PAn to H PW O is 1:1.5, the volume of methanol is 20 mL, and the reflux reaction 3 12 40 time is 3 h. The structural identity of Keggin units is preserved after the incorporation into polyaniline matrix. Catalytic activities of H PW O /PAn in synthesizing 2-methyl-2-ethoxycarbonylmethyl-1,3-dioxolane,2,4-dimethyl-2-ethoxycarbonylmethyl-1,3-dioxolane, cy- 3 12 40 clohexanone ethylene ketal, cyclohexanone 1,2-propanediol ketal, butanone ethylene ketal, butanone 1,2-propanediol ketal, 2-phenyl-1,3-di- oxolane, 4-methyl-2-phenyl-1,3-dioxolane, 2-propyl-1,3-dioxolane, and 4-methyl-2-propyl-1,3-dioxolane were reported. It has been demon- strated that H3PW12O40/PAn is an excellent catalyst. Various factors concerned in these reactions were investigated. The

文档评论(0)

wnqwwy20 + 关注
实名认证
内容提供者

该用户很懒,什么也没介绍

版权声明书
用户编号:7014141164000003

1亿VIP精品文档

相关文档