摘要：本论文研究的新点是，以乙腈为溶剂，不经分水，使原料季戊四醇和苯甲醛溶解在均相中反应，产物在冷溶液中折出，大大简化了后处理。研究表明，    季戊四醇双缩苯甲醛的最佳工艺条件为：以氨基磺酸为催化剂，用量0.8g；反应时间3h；季戊四醇:苯甲醛=1:2.4，在此条件下，产物收率可达80.3%。产物结构通过红外光谱、核磁共振光谱进行了表征。43670

毕业论文关键词：季戊四醇；苯甲醛；双缩；乙腈；氨基磺酸

Synthesis of Pentaerythritol double benzaldehyde

Abstract: The new point of this paper is to acetonitrile as the solvent, without separation water treatment, the raw material pentaerythritol and benzaldehyde were dissolved in a homogeneous solution and the reaction product will precipitate in cold solution .All of this can greatly simplify the post-processing. Experiments show that the optimum conditions of the synthesis: the sulfamic acid as catalyst, the amount of 0.8g; reaction time 3h; pentaerythritol: benzaldehyde = 1: 2.4. Under these conditions, the yield can up to 80.3%.Condensation product structure by IR specttum and HNMR to characterize.

Key Words: Pentaerythritol; benzaldehyde; condensation; acetonitrile; sulfamic acid

目录

1、前言 1

1.1 开题依据 1

1.2. 季戊四醇缩醛（酮）的研究状况 2

1.2.1以硫酸为催化剂进行双缩 2

1.2.2以对甲苯磺酸为催化剂，环己烷为带水剂进行双缩 2

 1.2.3以对甲苯磺酸为催化剂，苯为带水剂进行双缩 3

1.2.4以对甲苯磺酸为催化剂，环己烷为带水剂进行双缩 3

1.2.5以硫酸铝钾为催化剂，在微波辐射无溶剂条件下进行双缩 3

1.2.6以硫酸氢铵为催化剂，在微波照射无溶剂条件下进行双缩 3

 1.2.7以杂多酸为催化剂，苯为带水剂情况下进行单缩 3

1.2.8杂以S2082-／Sn02-Si02固体超强酸为催化剂，苯为带水剂情况下双缩.........4

1.2.9以活性炭负载碘为催化剂，甲苯为带水剂情况下进行双缩 4

 1.2.10以活性炭负载四氯化锡为催化剂，利用微波辐射法进行双缩 4

1.2.11以杂多酸-聚合物复合膜为催化剂，环己烷为带水剂进行双缩 5

1.2.12以稀土Ce4+复合钛基固体酸为催化剂，环己烷为带水剂进行双缩................5

    1.2.13以活性炭负载磷钨酸为催化剂，以苯为溶剂进行缩合.....................................5

        1.2.14以硫酸锆-硅胶为催化剂，利用微波辐射法进行双缩…………………………6

1.2.15以硫酸铝为催化剂，在微波辐射无溶剂情况下进行双缩……………………..6

1.2.16以SO42-/TiO2-SnO2固体超强酸为催化剂，无溶剂条件下进行双缩……….6

1.2.17以硫酸氢钾为催化剂，无溶剂微波辐射条件下进行双缩……………………..7

1.2.18以脱铝超稳Y沸石(简称DUSY)为催化剂，有溶剂条件下进行双缩………..7

1.2.19以可膨胀石墨为催化剂，甲苯为脱水剂进行缩合……………………………..7 季戊四醇双缩醛（酮）的合成:http://www.youerw.com/huaxue/lunwen_44622.html