天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
010-86108875
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List hex-2-enal
505-57-7

hex-2-enal synthesis

13synthesis methods
From interaction of butyraldehyde acetal with vinyl ether followed by hydrolysis or by any other suitable means.
-

Yield:505-57-7 84%

Reaction Conditions:

Stage #1:butyraldehyde;ethyl vinyl ether with boron trifluoride diethyl etherate at 10 - 20; for 1 h;
Stage #2: with zinc(II) chloride in waterHeating;Temperature;Reagent/catalyst;

Steps:

4 Example 4
To the reaction flask was added 0.02 equivalents of boron trifluoride ether solution,A mixture of 100 g of vinyl ether and 300 g of n-butyraldehyde n-butyraldehyde was added dropwise,Temperature control at 10-20 ,After stirring, the mixture was stirred for 1 hour,6.5% of the 5% zinc chloride aqueous solution was added to the other reaction flask and heated,The reaction solution was added dropwise and the mixture was distilled off while dropping.The distillate crude product was added to 0.2% by weight of p-methoxyphenol,First distillation of low-boiling,Continuous distillation in the decompression,When the pressure is -0.09MPa, the top temperature of 78-80 when the collection of 2-hexenal pure,Yield 84%, GC: 99.5%.

References:

Hubei Jinghong Biotechnology Co., Ltd.;Yang, Hui;Zhao, Yayun;Zhu, Meishan;Hua, Xinglei;Chen, Lei CN106380383, 2017, A Location in patent:Paragraph 0014; 0015; 0016; 0017

FullText

hex-2-enal Related Search: