Eight novel N,N′-naphthalene acyl substituted aromatic acylamino thiocarbamides(Ⅱ1~Ⅱ8) were synthesized from aryl acylhydrazine(Ⅰ) and α-naphthalene acyl isothiocyanate, which was obtained by the reaction of potassium thiocyanate with α-naphthalene acyl chloride obtained from 2-naphthylacetic acid and thionyl chloride in anhydrous benzene.
通过α-萘乙酸和SOCl2在无水苯中反应制得α-萘乙酰氯,与硫氰酸钾反应生成α-萘乙(酰基)异硫氰酸酯,再与芳基酰肼进行加成反应,合成8种新型N,N′-萘乙(酰基)取代芳乙酰胺基硫脲类化合物(Ⅱ1～Ⅱ8)。
A novel compound——N-naphthalene acylN′-substituted p-chlorobenzamido thiocarbamide was synthesized by reaction of p-chlorobenzamido hydrazine and α-naphthalene acyl mustard oil,which was obtained by potassium thiocyanate combined with α-naphthalene acyl chloride formed from α-naphthylacetic acid and SOCl2 in anhydrous benzene.
通过α-萘乙酸和SOCl2在无水苯中反应制得α-萘乙酰氯,然后与硫氰酸钾反应生成α-萘乙(酰基)异硫氰酸酯,再与对氯苯甲酰肼进行加成反应,合成了新型化合物N-萘乙(酰基)-N′-对氯苯甲酰氨基硫脲,用薄层色谱法跟踪最后一步反应,确定了反应时间。
Edible Membrane Studies on Deacetyl Konjac Glucomannan;
脱乙(酰基)魔芋葡甘聚糖可食性膜材料研究
Deacetyl Modification of Konjac Glucomannan(KGM) by alkali and the effects of different times of alkali treatment on mechanical properties and nanometer-scale micromorphological features of membranes from KGM were explored.
研究了天然高分子魔芋葡甘露聚糖加碱去乙(酰基)改性,考察了不同碱处理时间对魔芋葡甘聚糖(KGM)膜力学性能及纳米尺度微观形貌特征的影响,单因素方差分析表明,不同碱处理时间对KGM膜力学性能与膜面AFM形貌图像三维粗糙度数字化参数——均方根粗糙度(RM S)、平均面粗糙度(R a)、最大高低差(P-V)、表面积(S)、表面积率(S ra tio)、10点平均粗糙度(R z)等的影响并不相同,其中,对KGM膜耐折度(FE)与RM S、R a、R z参数具有显著影响(P<0。
Based on the method of Lemieux, this paper applies a carbohydrate compounds synthesis method to phenol compounds synthesis, and reports for the first time a convenient and efficient procedure developed for conversion of phenol protective group from acetyl to benzyl with BnBr and KOH in refluxing THF in one-pot.
在Lemieux方法的基础上,将应用于糖类化合物的方法首次应用到酚类化合物上,报道了乙(酰基)保护的酚类化合物,在苄溴、氢氧化钾作用下于四氢呋喃中回流通过一锅转化法转换得到苄基保护化合物;在有多个乙(酰基)同时存在条件下,通过调节氢氧化钾的用量来控制苄基取代的程度。
Effect of Deacetylation in Course of Konjac Glucomannan Carboxy Methylation and Structure Characterization of the Products;
脱乙(酰基)对魔芋葡甘聚糖羧甲基改性的影响及产物结构表征
Abstract: Some methods of characterization and determination of transiormation ratio irorn acetylamine to amine in the deacetylation of chiun have been reviewed and evaluated.
本文对甲壳素脱乙(酰基)制取壳聚糖的反应中从乙酰胺基转变成胺基的转化率的各种表征方式和测定方法进行了详细综述和评价。