Archiv der Pharmazie p. 269 - 270 (1995)
Update date:2022-08-04
Topics:
Lemcke
Messinger
Cyclocondensation of 3-ethoxy-2-sulfonyl-2-propen-1-ones 1 with benzamidine (2a) guanidine (2b) and S-benzyl-iso-thiourea (2c) leads to the 2,4-disubstituted 5-sulfonyl-pyrimidines 3a-c. 1 reacts with hydrazines 4a,b or hydroxylamine yielding the 4-sulfonyl-pyrazoles 5a-c and 4-sulfonyl-isoxazole 6, respectively.
View MoreChangsha Huajing Powdery Material Technological Co., Ltd.
Contact:86-731-88879686
Address:Building 2, West Garden, Main Campus of Central South University, Changsha, Hunan Province, China
Hubei Sky Lake Chemical Co., Ltd.
Contact:+86-27-87385545
Address:Te-2, Xijiao Chemical Park, Yuekou Town, Tianmen, Hubei, China.
CHANGYI CITY FENGRUN FINE CHEMICAL CO.,LTD
website:http://www.fengrunhuagong.com
Contact:+86-536-7869976
Address:Changyi Coastal Economic Development Zone
QINGDAO DEVELOP chemistry Co.,Limited
Contact:+86-532-85807910
Address:98#Nanjing Road, Qingdao, China 266071
Nanjing Fubang Chemical Co.,Ltd
Contact:+86-25-83179199
Address:5F,Tianzheng international plaza,No399 Zhongyang Road ,Nanjing China
Doi:10.1021/om800597f
(2008)Doi:10.1039/b808374f
(2008)Doi:10.1021/ja972664n
(1998)Doi:10.1016/S0022-1139(00)81934-X
(1986)Doi:10.1246/bcsj.59.3535
(1986)Doi:10.1016/S0040-4039(00)84850-9
(1986)
