Bromination of hydroxyheteroarenes using P(2)O(5)/Bu(4)NBr proceeds under mild conditions to afford high yields of various bromoheteroarenes. This procedure is successfully applied to large-scale syntheses of bromoheteroarenes. (C) 2001 Elsevier Science Ltd. All rights reserved.
The present invention is concerned with novel compounds of formula (I) having fundic relaxating activity. The invention further relates to methods for preparing such compounds, pharmaceutical compositions comprising said compounds as well as the use as a medicine of said compounds.
US6114524A
申请人:——
公开号:US6114524A
公开(公告)日:2000-09-05
US7994173B2
申请人:——
公开号:US7994173B2
公开(公告)日:2011-08-09
A facile bromination of hydroxyheteroarenes
作者:Yoshiaki Kato、Shigemitsu Okada、Koji Tomimoto、Toshiaki Mase
DOI:10.1016/s0040-4039(01)00864-4
日期:2001.7
Bromination of hydroxyheteroarenes using P(2)O(5)/Bu(4)NBr proceeds under mild conditions to afford high yields of various bromoheteroarenes. This procedure is successfully applied to large-scale syntheses of bromoheteroarenes. (C) 2001 Elsevier Science Ltd. All rights reserved.