1) Cinamaldehyde glycol acetal
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肉桂醛乙二醇缩醛
1.
Synthesis of Cinamaldehyde glycol acetal catalyzed by H_3PW_(12)O_(40)/TiO_2;
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H_3PW_(12)O_(40)/TiO_2催化合成肉桂醛乙二醇缩醛
2) cinnamaldehyde glycol acetal
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肉桂醛缩乙二醇
1.
Study on the catalytic synthesis of cinnamaldehyde glycol acetal by titanium sulphate doped lanthanum oxide;
搀杂氧化镧的硫酸钛催化合成香料肉桂醛缩乙二醇的研究
2.
This experiment takes idodine as the catalyst,synthesizes cinnamaldehyde glycol acetal with cinnamic aldehyde and the glycol as the raw material.
以碘为催化剂,分子筛作除水剂,以肉桂醛和乙二醇为原料合成肉桂醛缩乙二醇。
3) butyraldehyde glycol acetal
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丁醛乙二醇缩醛
1.
Progress on research of catalyst for synthesis of butyraldehyde glycol acetal;
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合成丁醛乙二醇缩醛的催化剂研究进展
2.
Using self-made H3PW6Mo6O40 as catalyst,butyraldehyde glycol acetal was prepared by butyraldehyde and glycol.
用自制的磷钨钼杂多酸作催化剂,以丁醛和乙二醇反应合成了丁醛乙二醇缩醛。
3.
4% of feed stocks,volume of cyclohexane as the water-carrying agent is 8 mL,and the reaction time is 45 min,yield of butyraldehyde glycol acetal can reach 77.
以单质碘为催化剂,通过丁醛和乙二醇反应合成了丁醛乙二醇缩醛。
4) furfural glycol acetal
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糠醛乙二醇缩醛
1.
Synthesis of furfural glycol acetal using H_3PW_(12)O_(40)/SiO_2 as catalyst;
![点击朗读](/dictall/images/read.gif)
H_3PW_(12)O_(40)/SiO_2催化合成糠醛乙二醇缩醛的研究
2.
It was found that experimentlly yield of furfural glycol acetal was 93.
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糠醛乙二醇缩醛的收率为93。
5) n-butyraldehyde glycol acetal
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丁醛乙二醇缩醛
1.
Catalytic synthesis of n-butyraldehyde glycol acetal with tin tetrachioride supported on silica gel;
硅胶负载四氯化锡催化合成丁醛乙二醇缩醛
2.
Catalytic synthesis of n-butyraldehyde glycol acetal with SO_4~(2-)/TiO_2-La_2O_3;
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SO_4~(2-)/TiO_2-La_2O_3催化合成丁醛乙二醇缩醛
3.
n-butyraldehyde glycol acetal was catalytically synthesized from n-butyraldehyde and glycol as raw materials in the presence of phosphotungstic acid pur supported on active carbon as catalyst.
用活性炭负载磷钨酸催化合成丁醛乙二醇缩醛,研究了催化剂的用量,反应温度,反应时间,醛醇物质的量之比及带水剂等因素对反应的影响。
6) ethylidene ether
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乙缩醛;乙醛缩二乙醇;醛缩醇;缩醛
补充资料:肉桂醛
存在于中国盛产的肉桂油中。分子式C6H5CH=CHCHO。肉桂醛在室温下为淡黄色油状物;熔点 -7.5℃,沸点253℃(分解),相对密度1.0497(20/4℃);具有浓厚的肉桂香味,是一种食用香料。
肉桂醛可由苯甲醛和乙醛在稀碱的作用下,发生交叉的羟醛缩合反应制得:
乙醛容易发生自身反应,生成β-羟基丁醛,反应是可逆的。苯甲醛与乙醛之间的反应较难进行,生成的产物为β-羟基苯丙醛。β位的羟基因受到苯基的活化,容易发生脱水反应,生成肉桂醛,使反应失去可逆性。如果在室温下搅拌,放置8~10天或更长的时间,可导致肉桂醛的积累。
肉桂醛可由苯甲醛和乙醛在稀碱的作用下,发生交叉的羟醛缩合反应制得:
乙醛容易发生自身反应,生成β-羟基丁醛,反应是可逆的。苯甲醛与乙醛之间的反应较难进行,生成的产物为β-羟基苯丙醛。β位的羟基因受到苯基的活化,容易发生脱水反应,生成肉桂醛,使反应失去可逆性。如果在室温下搅拌,放置8~10天或更长的时间,可导致肉桂醛的积累。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条