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
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!

53844-98-7

2,4-Dihydroxy-5-nitrobenzaldehyde synthesis

4synthesis methods
-

Yield:53844-98-7 88%

Reaction Conditions:

with nitric acid;acetic acid at 20; for 2 h;Cooling with ice;

Steps:

33 2,4-hydroxy-3-nitrobenzaldehydeSynthesis of (33A)

General procedure: 2,4-Hydroxybenzaldehyde (10.0g, 72.4mmol) was dissolved in acetic acid (20mL), cooled in an ice bath, concentrated nitric acid (20mL) was added dropwise, and reacted at room temperature for 2 hours,The reaction solution was poured into 200 mL of saturated brine, filtered off with suction, and dried to obtain 11.6 g of light yellow solid with a yield of 88%.

References:

CN111187172,2020,A Location in patent:Paragraph 0230-0234

2,4-Dihydroxy-5-nitrobenzaldehyde Related Search: