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!

64328-61-6

4-BUTOXYBENZOHYDRAZIDE synthesis

6synthesis methods
-

Yield:64328-61-6 91%

Reaction Conditions:

with hydrazine hydrate in methanol at 70;

Steps:

1

33.9 g (163 mmol) of methyl 4-butoxybenzoate, 150 ml of hydrazine hydrate (80%) and 500 ml of methanol were added to a 1000 ml three-necked flask, and heated to reflux at 70 °C. After the reaction was completed, the reaction solution was spin-dried to obtain a white solid. The white solid was washed three times with water and filtered to finally obtain 30 g of 4-butoxybenzoylhydrazide (yield: 91%)

References:

CN110272364,2019,A Location in patent:Paragraph 0044; 0046