Cyclization of Activated Methylene Isocyanides with Methyl N(N),N′-Di(tri)substituted Carbamimidothioate: A Novel Entry for the Synthesis of N,1-Aryl-4-tosyl/ethoxycarbonyl-1H-imidazol-5-amines
oleh: Dukanya Dukanya, Toreshettahally R. Swaroop, Shobith Rangappa, Kanchugarakoppal S. Rangappa, Basappa Basappa
| Format: | Article |
|---|---|
| Diterbitkan: | Georg Thieme Verlag KG 2019-07-01 |
Deskripsi
Abstract Base-induced cyclization of active methylene isocyanides with carbamimidothioates for the synthesis of N,1-aryl-4-tosyl/ethylcarboxy-1H-imidazol-5-amines is reported. The diversity of the reactions is exemplified by using various carbamimidothioates obtained from symmetrical N,N-disubstituted, unsymmetrical N,N,N-trisubstituted, and unsymmetrical N,N-disubstituted thioureas. This diversity is further enriched by different isocyanides. A mechanism for the formation of the title compounds is proposed.