一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

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 2,3,4-Trihydroxybenzaldehyde
2144-08-3

2,3,4-Trihydroxybenzaldehyde synthesis

6synthesis methods
The method for synthesizing 2,3, 4-trihydroxybenzaldehyde is shown as follows.
2,3,4-TrihydroxybenzaldehydeThis method takes pyrogallol as an initial raw material. It comprises three steps of phenolic hydroxyl protection, formylation, and deprotection: protecting two adjacent phenolic hydroxyl groups in the pyrogallol to obtain 4-hydroxybenzo[d][1,3]dioxol-2-one, then performing formylation to obtain 7-hydroxy-2-oxobenzo[d][1,3]dioxole-4-carbaldehyde, and finally removing a protecting group to get a target 2,3,4-trihydroxybenzaldehyde.

-

Yield:-

Steps:

Multi-step reaction with 3 steps
1: triethylamine / tert-butyl methyl ether / Reflux
2: aluminum (III) chloride / tert-butyl methyl ether / 0 - 5 °C
3: water / Reflux

References:

CN112830872,2021,A

2,3,4-Trihydroxybenzaldehyde Related Search:

永宁县| 高要市| 七台河市| 滦平县| 灵寿县| 颍上县| 潮州市| 攀枝花市| 高州市| 浦县| 平罗县| 灵璧县| 邓州市| 宁乡县| 郁南县| 玛曲县| 于田县| 互助| 淅川县| 两当县| 台北县| 安阳市| 慈利县| 宜兴市| 渝中区| 武隆县| 若尔盖县| 安新县| 都江堰市| 龙川县| 徐水县| 廉江市| 出国| 剑河县| 永兴县| 玉溪市| 兴安盟| 沙雅县| 兰考县| 海伦市| 蒙城县|