二乙酰亚胺和硫代乙酰基乙酰胺的热分解反应研究

本文用MINDO/3方法研究了二乙酰亚胺和硫代乙酰基乙酰胺的热分解反应,结果表明,硫代乙酰基乙酰胺比二乙酰亚胺易分解:且苯基对分解反应的影响甚小。

Synthesis and characterization of 2-hydroxy-N-methyl-N-phenyl-acetamide

2-hydroxy N methyl N phenyl acetamide was synthesized by using N methylaniline, chloracetyl chloride, anhydrous sodium acetate and methanol through the acetylation, esterfication and ester interchange steps. The acetylation of N methylaniline with chloracetyl chloride, catalyzed by triethylamide with mole ratio n (C 6H 5NHCH 3)∶ n (ClCH 2C(O)Cl)∶ n (N(C 2H 5) 3)=1∶1.05∶1, the yield of 2 chloro N methyl N phenyl acetamide(Ⅰ) was 93.8%; Then the esterification of Ⅰ with anhydrous sodium acetate in the presence of phase transfer catalyst tetrabutyl ammonia bromide gave 97.3% yield of 2 acetoxyl N methyl N phenyl acetamide (Ⅱ); The ester interchange of with methanol catalyzed by potassium hydroxide gave 2 hydroxy N methyl N phenyl acetamide (Ⅲ) in 96.4% yield. And the total yield was 88.0%. IR and MS spectroscopy of products were analyzed and their characteristic peaks were assigned. Combining the results of elemental analysis, the molecular structure of Ⅰ, Ⅱ and Ⅲ was identified.

1-(4’-磺基苯基)-3-甲基-5-吡唑啉酮的合成及应用

文章简介了由双乙烯酮衍生的1-(4’-磺基苯基)-3-甲基-5-吡唑啉酮的合成工艺。全面系统的介绍了1-(4’-磺基苯基)-3-甲基-5-吡唑啉酮作为偶合组分和一些芳胺或取代芳胺化合物的重氮物进行偶合反应,可以制备许多品种的酸性染料、活性染料和媒介染料。这些品种的染料可分别用于羊毛、丝绸、锦纶、黏胶、棉等纤维和织物上,在纺织印染工业上有着广泛的应用。列出了这些品种的商品名称、化学结构式、CAS登录号、欧共体登记号、合成反应流程的方框示意图以及用途和国内主要生产企业。