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 MoreBeijing Greenchem Technology Co.,Ltd. ( Panjin Greenchem Technology Co.Ltd .)
website:http://www.bjgreenchem.com/
Contact:+86-427-6515887
Address:301,302, 3rd Floor, Building C-7, Dongsheng Science Park, Northern Territory, Zhongguancun, No. 66, Xixiaokou Road, Haidian District, Beijing
shandong zhongke taidou chemical co.,ltd
Contact:86-531-88682301
Address:Jinan shandong Province CHina
Changzhou Litong Chemical Co., Ltd.
website:http://www.litonchem.com/
Contact:+86-519-86301238
Address:Laoba Rd, Hutang town Changzhou Jiangsu
Shanghai Yingrui Biopharma Co., Ltd
Contact:021-3358 8661*8003
Address:shanghai
Zibo Kunran Enterprises Co. LTD
website:http://www.kunranchem.com
Contact:0086 533 5200669
Address:No. 96 Jinjing Avenue, Zibo, Shandong, 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)
