But perhaps the most fascinating of all Perkin's reactions to his find was his nearly instant recognition that the new dye had commercial possibilities.
但也许 Perkin 对他的发现的所有反应中最令人着迷的是他几乎立即认识到这种新染料具有商业可能性。
单词 | Perkin reaction |
释义 |
Perkin reaction
原声例句
雅思阅读真题 But perhaps the most fascinating of all Perkin's reactions to his find was his nearly instant recognition that the new dye had commercial possibilities. 但也许 Perkin 对他的发现的所有反应中最令人着迷的是他几乎立即认识到这种新染料具有商业可能性。
中文百科
珀金反应![]() ![]() Perkin反应(珀金反应、浦尔金反应) 芳香醛与酸酐在碱性催化剂存在下,发生类似羟醛缩合反应得到 β-芳基-α,β-不饱和羧酸。通常使用与酸酐对应的羧酸盐作催化剂。
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例如,苯甲醛与乙酸酐在乙酸钠催化下在 170~180°C 沸腾加热5小时,得到肉桂酸。 反应由英国化学家威廉·珀金(William Perkin)发现。 这个反应常用于合成肉桂酸及其同系物。 综述:
英语百科
Perkin reaction 珀金反应![]() ![]() ![]() ![]() The Perkin reaction is an organic reaction developed by William Henry Perkin that is used to make cinnamic acids. It gives an α,β-unsaturated aromatic acid by the aldol condensation of an aromatic aldehyde and an acid anhydride, in the presence of an alkali salt of the acid. The alkali salt acts as a base catalyst, and other bases can be used instead. |
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