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!

ChemicalBook CAS DataBase List 7-Aminopyrazolo[1,5-a]pyrimidine-6-carbonitrile
89975-57-5

7-Aminopyrazolo[1,5-a]pyrimidine-6-carbonitrile synthesis

5synthesis methods
1225387-53-0 Synthesis
1H-Pyrazol-5-amine

1225387-53-0
59 suppliers
inquiry

-

Yield:89975-57-5 90 %

Reaction Conditions:

with pyridineReflux;

Steps:

General procedure for the synthesis of 7-aminoazolo[1,5-a]pyrimidine-6-carbonitriles 3a-3w

General procedure: A mixture of 0.01 mol of appropriate aminoazole 1a-1w, 0.01 mol (1.22 g) of (ethoxymethylidene)malononitrile 2, and 25 mL of pyridine was heated under reflux (3l was prepared at 70°C) for 1-7 h (specific time is noted for each reaction). The reaction mixture was cooled to ambient temperature, target product was isolated by procedure noted below.

References:

Urakov;Savateev;Rusinov [Doklady Chemistry,2022,vol. 505,# 2,p. 168 - 176][Dokl. Akad. Nauk,2022,vol. 505,p. 40 - 49]

7-Aminopyrazolo[1,5-a]pyrimidine-6-carbonitrile Related Search: