Continuous production of a near infrared absorbing chromophore

In H. Song, Chang H. Rhee, Sang Hyun Park, Su Lim Lee, Dmitry Grudinin, Kwang Ho Song, Jaehoon Choe

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


The nickel dithiolene complex-type near-infrared chromophore, nickel bis-(1,2-diisopropylthioethane-1,2-dithiolene), was synthesized in three reaction steps and applied to a near-infrared cutoff filter for PDP TV. A microreactor was employed in the strong exothermic reaction of 2-propanethiol and oxalyl chloride. A 90% yield of S,S -diisopropyl dithiooxalate was obtained with a 75% reduction in solvent usage. Thionation of S,S -diisopropyl dithiooxalate with the use of tetraphosphorus decasulfide and aluminum hydroxide provided a clean dithiolene feed for the next continuous step. The final product was efficiently produced in a microreactor and a tubular reactor in series using nickel chloride solution and dithiolene synthesized from thionation in a batch reactor.

Original languageEnglish
Pages (from-to)1012-1015
Number of pages4
JournalOrganic Process Research and Development
Issue number5
Publication statusPublished - 2008 Sep 19

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry


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