Zum Einfluss der Elektrolytströmung an der tropfenden Quecksilberelektrode

✍ Scribed by P. Bersier; J. Bersier; R. Chaperon; F. Hügli

• Book ID: 102247543
• Publisher: John Wiley and Sons
• Year: 1961
• Tongue: German
• Weight: 304 KB
• Volume: 44
• Category: Article
• ISSN: 0018-019X
• DOI: 10.1002/hlca.19610440210

✦ Synopsis

The synthesis of urea, thiourea and tetrahydroimidazole derivatives of D-glucosamine is described.

The urea and thiourea derivatives of type I1 and I11 are prepared by condensation of the appropriate isocyanate or thioisocyanate with I and deacetylation of the resulting I1 with ammonia in methanol. None of the derivatives of type I11 shows mutarotation.

By splitting one mole of water from I11 the tetrahydroimidazoles of type IV are prepared. The constitution of these compounds is established by acetylation and comparison with a derivative of tetrahydroimidazole of unequivocal structure.