DARSTELLUNG VON PHOSPHONSäUREDIETHYLESTERN DURCH PHOSPHIT-KOPPLUNG VON 1,3-DITHIOL-2-THION-ANELLIERTEN KRONENVERBINDUNGEN

Abstract

The reaction of the crowned 1,3-dithiole-2-thiones 1 and 2 with triethyl phosphite leads to the tetrathiafulvalenes 3 and 4, as well as 1,3-dithiole-2-yl phosphonate esters 5 and 6. The structure of the phosphonate 6 was confirmed by a single-crystal X-ray structure analysis. Using deuterated triethylphosphites (P(OCH₂CD₃)₃ 7, P(OCD₂CH₃)₃, 8) the intramolecular proton transfer yielding the phosphonates was studied.

Synthese der Phosphonsäureester wird gezeigt, daß das zu deren Bildung notwendige Proton von einer CH₂-Gruppe des P(OCH₂CH₃)₃ geliefert wird.

Key Words:

• Tetrathiafulvalene
• thiacrown
• phosphonate ester