LAUS, GERHARD;STADLWIESER, JOSEF;KLOTZER, WILHELM, SYNTHESIS (BRD),(1990) N, C. 795-798
作者:LAUS, GERHARD、STADLWIESER, JOSEF、KLOTZER, WILHELM
DOI:——
日期:——
US4816454A
申请人:——
公开号:US4816454A
公开(公告)日:1989-03-28
1-Hydroxyimidazole Derivatives IV. Quaternary Salts Derived from 1-Hydroxy-1<i>H</i>-imidazoles
作者:Gerhard Laus、Josef Stadlwieser、Wilhelm Klötzer
DOI:10.1055/s-1990-27018
日期:——
General procedures for the synthesis of 3-substituted 1-alkyloxy,1-arylmethyloxy, and 1-phenyloxyimidazolium salts are described. 1,3-Bis(arylmethyloxy)imidazolium salts can be prepared using phase transfer conditions for the alkylation of 1-hydroxy-1H-imidazole 3-oxides. When the hydroxy group of 1-hydroxy-1H -imidazoles is protected during quaternization, 1-substituted imidazole 3-oxides are obtained.
1-Hydroxyimidazole Derivatives III.<sup>1,2</sup>Synthesis of 1-Alkyloxy-, 1-Arylalkyloxy-, and 1-Phenoxy-1<i>H</i>-imidazoles
作者:Gerhard Laus、Josef Stadlwieser、Wilhelm Klötzer
DOI:10.1055/s-1989-27392
日期:——
1-Hydroxy-1H-imidazole and 2-alkyl-1-hydroxy-1H-imidazoles are prepared by selective hydrogenation of the corresponding 1-hydroxy-1H-imidazole 3-oxides and subsequently transformed to the 1-alkoxy, 1-arylalkyloxy and 1-phenoxy derivatives.