Process for prepararing 5-methyl-4-imidazolecarboxylic acid esters
申请人:SMITHKLINE BECKMAN CORPORATION
公开号:EP0049638A1
公开(公告)日:1982-04-14
A process for the preparation of 5-methyl-4-imidazolecarboxylic acid esters from acetoacetic acid esters. The products of this process are useful as intermediates for preparing cimetidine.
一种从乙酰乙酸酯制备 5-甲基-4-咪唑羧酸酯的工艺。该工艺的产品可用作制备西咪替丁的中间体。
US4328349A
申请人:——
公开号:US4328349A
公开(公告)日:1982-05-04
US4374252A
申请人:——
公开号:US4374252A
公开(公告)日:1983-02-15
Process for preparing 5-methyl-4-imidazolecarboxylic acid esters
申请人:SK&F Lab Co.
公开号:US04328349A1
公开(公告)日:1982-05-04
A process for the preparation of 5-methyl-4-imidazolecarboxylic acid esters from acetoacetic acid esters. The products of this process are useful as intermediates for preparing cimetidine.
一种从乙酰乙酸酯制备5-甲基-4-咪唑羧酸酯的工艺。该工艺的产物可作为制备西米替丁的中间体。
Self-Assembled Helices from 2,2′-Biimidazoles
作者:William E. Allen、Christopher J. Fowler、Vincent M. Lynch、Jonathan L. Sessler
2,2'-Biimidazoles were synthesized by palladium(0)-catalyzed coupling of 2-iodoimidazoles bearing an alkyl and an ester group at the 4- and 5-positions, respectively. The products were found to be fluorescent and moderately soluble in organic solvents. Three biimidazoles were subjected to single crystal X-ray diffraction analysis. In all three instances, adjacent molecules were found to be bound together