Process for the preparation of heterocyclyl chalcogenones via reaction of elemental sulfur, selenium, or tellurium with heterocyclic cationic species.

Robin Don Rogers (Inventor), John Holbrey (Inventor), Hector Rodriguez Martinez (Inventor)

Research output: Patent

Abstract

Heterocyclic chalcogenones were prepd. by reaction of S, Se, or Te with ionic liqs. or salts [I; Ra = (substituted) alkyl, cycloalkyl, aryl, aralkyl, alkylaryl; Q = (unsatd.) (substituted) linker to form a ring of 5-10 members; X- = anion selected from conjugate bases of HX having a pKa value of >2.5]. Thus, 1-butyl-3-methylimidazolium acetate was heated with stoichiometric S at 75° for 48 h to give 1-butyl-3-methylimidazole-2-thione. [on SciFinder(R)]
Original languageEnglish
Patent numberWO2010116166A2
Publication statusPublished - 14 Oct 2010

Bibliographical note

CAPLUS AN 2010:1283933(Patent)

Keywords

  • heterocyclyl chalcogenone prepn
  • sulfur selenium tellurium reaction heterocyclic cationic species
  • imidazolylthione prepn

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