3-Brom-2,6-dimethoxy-tetrahydropyran | 89942-22-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 氧烷类
• 英文名称: 3-Brom-2,6-dimethoxy-tetrahydropyran
• 英文别名: 2,6-Dimethoxy-3-bromotetrahydropyran；3-bromo-2,6-dimethoxyoxane
• CAS: 89942-22-3
• 化学式: C₇H₁₃BrO₃
• 分子量: 225.082
• InChiKey: DIPSHYBBIMXBER-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.4
• 重原子数：
  11
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  27.7
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  sodium 1-amino-4-(3-aminophenylamino)-9,10-dioxo-9,10-dihydroanthracene-2-sulfonate 、 3-Brom-2,6-dimethoxy-tetrahydropyran 在 盐酸 、 碳酸氢钠 作用下， 以 水 、 丙酮 为溶剂， 反应 14.0h， 生成
  参考文献：
  名称：

  Synthesis, identification and application of aldehyde reactive dyes

  摘要：

  Nine aldehyde reactive dyes, designated D-1- D-9, were synthesized. Among them, D-1 and D-2 were synthesized by "grafting" alizarin red and alizarin yellow GG, respectively, to the alpha-C of n-butyl-aldehyde; D-3 and D-4 were synthesized by "grafting" alizarin red and alizarin yellow GG, respectively, to the methyl-C of 4-methyl-cinnamaldehyde; D-5- D-9 were synthesized by "grafting" alizarin red, alizarin yellow GG or self-prepared colorants to the alpha-C of glutaraldehyde. UV-Vis, FTIR, ESI-MS, elemental analysis and H-1 NMR were applied to identify the target products. Aluminum-tanned wet-white sheep leather was chosen as substrate for the application experiments, and their four dyeing property indexes, i.e., substantivity (S), exhaustion (E), fixation (F) and reactivity (R) were measured. The results indicated that, without adding of neutral salts and under mild conditions (T = 35-45 degrees C, pH = 4.0-6.5), all these dyes could dye wet-white leather within 1.5 h, and the dyed leather possessed a satisfactory washing-fastness. (C) 2015 Published by Elsevier Ltd.

  DOI：

  10.1016/j.dyepig.2015.05.033
• 作为产物：
  描述：

  3,4-二氢-2-甲基-吡喃 、 甲醇 在 N-溴代丁二酰亚胺(NBS) 作用下， 生成 3-Brom-2,6-dimethoxy-tetrahydropyran
  参考文献：
  名称：

  Synthesis, identification and application of aldehyde reactive dyes

  摘要：

  Nine aldehyde reactive dyes, designated D-1- D-9, were synthesized. Among them, D-1 and D-2 were synthesized by "grafting" alizarin red and alizarin yellow GG, respectively, to the alpha-C of n-butyl-aldehyde; D-3 and D-4 were synthesized by "grafting" alizarin red and alizarin yellow GG, respectively, to the methyl-C of 4-methyl-cinnamaldehyde; D-5- D-9 were synthesized by "grafting" alizarin red, alizarin yellow GG or self-prepared colorants to the alpha-C of glutaraldehyde. UV-Vis, FTIR, ESI-MS, elemental analysis and H-1 NMR were applied to identify the target products. Aluminum-tanned wet-white sheep leather was chosen as substrate for the application experiments, and their four dyeing property indexes, i.e., substantivity (S), exhaustion (E), fixation (F) and reactivity (R) were measured. The results indicated that, without adding of neutral salts and under mild conditions (T = 35-45 degrees C, pH = 4.0-6.5), all these dyes could dye wet-white leather within 1.5 h, and the dyed leather possessed a satisfactory washing-fastness. (C) 2015 Published by Elsevier Ltd.

  DOI：

  10.1016/j.dyepig.2015.05.033