午夜插插,噜噜噜影院,啪啪伊人网,欧美熟夫,景甜吻戏视频,男人强操性感蕾丝美女视频在线网站,日本美女跳舞视频

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
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 3,4-DIMETHOXY-5-NITRO-BENZALDEHYDE
22027-96-9

3,4-DIMETHOXY-5-NITRO-BENZALDEHYDE synthesis

6synthesis methods
-

Yield: 98%

Reaction Conditions:

with nitric acid;acetic acid at 20; for 12 h;

Steps:

10 Example 10: Synthesis of 3,4-Dimethoxy-5-nitrobenzaldehyde (13a)
Dissolve 30mmol of 3,4-dimethoxybenzaldehyde in 20mL of glacial acetic acid, slowly add 30mL of concentrated nitric acid dropwise at room temperature, continue stirring for 12h, check the reaction process by TLC, after the reaction is complete, pour the reaction solution into a large amount of water , A pale yellow solid was precipitated, filtered and washed repeatedly with clear water, and dried to obtain the product with a yield rate of 98%.

References:

Wuhan Chemical New Materials Industry Technology Institute Co., Ltd.;Liu Peng;Yan Yezhou CN112079741, 2020, A Location in patent:Paragraph 0102-0103