Chemistry of Heterocyclic Compounds p. 181 - 185 (1992)
Update date:2022-07-30
Topics:
Smirnova, L.P.
Pozharskii, A.F.
Ivanova, I.A.
Chernyshev, A.I.
1-Ethyl-3-aryl-5-methylpyrazolo<3,4-d>pyrimidine-4,6-diones are formed in small amounts, together with the expected hydrazones, in the reaction of 3-methyl-6-(1-ethylhydrazino)uracil with aromatic aldehydes in ethanol.The yield of these diones increases substantially when the reaction is carried out in acetic acid and sodium nitrite is subsequently added to the mixture.A change in the temperature conditions makes it possible to direct this reaction toward the formation of 1-ethyl-3-aryl-6-methylpyrimido<5,7-e>as-triazine-5,7-diones.
View MoreContact:+86-571-28186845
Address:Room 1224,Eastcom Mansion,398 Wensan Road,Hangzhou,310013 China
SHANGHAI T&W PHARMACEUTICAL CO., LTD.
website:http://www.trustwe.com
Contact:+86-21-61551611
Address:601, No. 1, 2277 Nong, Zu Chongzhi Road, Zhangjiang Hightech. Park, Pudong
Wuxi Pharma-Trading Import & Export Co.,Ltd.
Contact:+86-510-82304590 82716390
Address:Room 523,Youzu Alliance Building,No.88 Renmin Zhonglu,Wuxi,Jiangsu,China
website:http://www.shochem.com
Contact:021-50800795
Address:No.1043, Halei Rd, Zhangjiang Hi-Tech Park, Shanghai, Postcode 201203, China
SHANDONG QINGYUNCHANGXIN CHEMICAL SCIENCE-TECH CO.,LTD
Contact:86-21-60560171
Address:1689Donghuan Rade,Qingyun County, Dezhou City, Shandong,China
Doi:10.1016/j.bmcl.2007.01.054
(2007)Doi:10.1002/anie.201604127
(2016)Doi:10.1021/bi00803a012
(1970)Doi:10.1016/0040-4039(92)89042-B
(1992)Doi:10.1002/jlcr.3028
(2013)Doi:10.1016/j.bmcl.2016.10.021
(2016)
