网站首页  英汉词典

请输入您要查询的英文单词:

 

单词 Ruff degradation
释义

Ruff degradation

中文百科

芦福递降反应

芦福递降反应Ruff递降法),糖化学中的递降反应之一,常用于糖类结构的测定及糖类的合成。反应中,先用溴水将糖氧化成糖酸,与氢氧化钙作用成糖酸钙盐,然后在乙酸铁、氯化铁或硫酸铁等三价铁化合物(Ruff试剂)的作用下,通过过氧化氢的氧化,得到一个不稳定的α-酮酸,失去二氧化碳,得到少一个碳的醛糖。反应机理比较复杂。

D-葡萄糖经此反应先生成葡萄糖酸、葡萄糖酸钙,然后氧化脱羧生成D-阿拉伯糖:

英语百科

Ruff degradation 芦福递降反应

In 1898, Otto Ruff published his work on the transformation of D-Glucose to D-Arabinose later called the Ruff degradation. In this reaction, D-Glucose is converted to D-Arabinose . In this reaction, the terminal aldehyde group is converted to a carboxylic acid group, using selective oxidation of the aldehyde using Bromine water and then converted to gluconate ion. Next, Fe(OAc)3 with 30% of H2O2 is added.

Thus COO- ion will form CO2 and a stereo selective compound will form. And below -CH2OH will convert to -CHO group, thus forming D-Arabinose.

随便看

 

英汉网英语在线翻译词典收录了3779314条英语词汇在线翻译词条,基本涵盖了全部常用英语词汇的中英文双语翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2024 encnc.com All Rights Reserved
更新时间:2025/6/27 6:56:40