Monatshefte fur Chemie p. 493 - 501 (1997)
Update date:2022-09-26
Topics:
Youssif
Several 7-methyl-5-alkyl-2-vinylpyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-diones were prepared. The successful cyclization and alkylation of 6-(α-methylbenzylidenehydrazino)-1-methyluracils 2a-d using dimethylformamide acetals at high temperature provided 6a-d, 7a-d, and 8a-d. Treatment of 6a-d and 7a-d with acid afforded 7-methyl-5-alkylpyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-diones 9a, b; under the same conditions, 3a-d reacted to 7-methylpyrazolo[3,4-d]-pyrimidine-4,6(5H)-dione (4) in good yield.
View MoreZhengzhou Yuanli Biological Technology Co., Ltd.
Contact:+86-371-67897870/67897895
Address:No. 38, Qingyang Street, Zhengzhou, Henan, China
Contact:86-21-57725962
Address:shanghai
Hubei Xiangxi Chemical Industry Co.,Ltd
Contact:+86-710-3454830
Address:No.7, Daqing East Road, Xiangfan City, Hubei Province, China
Zhejiang Linhai Xinhua Chemicals Factory
Contact:0086-13661858911
Address:Xunqiao Development Zone, Linhai, Zhejiang, China
website:http://www.tbbmed.com
Contact:86--21-50498136
Address:Room 6002, Building 7-1, No.160 Basheng Road,Pudong Area,Shanghai China
Doi:10.1039/a705495e
(1997)Doi:10.1016/S0960-894X(97)10057-9
(1997)Doi:10.1016/j.tetlet.2007.03.162
(2007)Doi:10.1016/j.jorganchem.2007.02.037
(2007)Doi:10.1016/S0960-894X(01)00119-6
(2001)Doi:10.1139/v68-500
(1968)
