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BY-NC-ND 3.0 license Open Access Published by De Gruyter June 2, 2014

Beiträge zur Chemie des Phosphors, 84 [1]. 1.2.3-Trimethyl-1.2.3-triphosphol, (PMe)3C2H2, und 2.3.4.6.7.8-Hexamethyl- 2.3.4.6.7.8-hexaphosphabicyclo [3.3.0] octan, (PMe)6C2H2 / Contributions to the Chemistry of Phosphorus, 84 [1]. 1,2,3-Trimethyl-1,2,3-triphosphole, (PMe)3C2H2, and 2,3,4,6,7,8-Hexamethyl- 2,3,4,6,7,8-hexaphosphabicyclo[3,3,0]octane, (PMe)6C2H2

  • Marianne Baudler and Elmar Tolls

The reaction of K2(PMe)4 · 2 THF with cis-1,2-dichloroethylene yields the hitherto unknown cyclocarbaphosphanes 1,2,3-trimethyl-1,2,3-triphosphole, (PMe)3C2H2 (1), and 2,3,4,6,7,8-hexamethyl-2,3,4,6,7,8-hexaphosphabicyclo[3,3,0]octane, (PMe)6C2H2 (2). Be­sides, (PMe)5, (PMe)4CH2, (PMe)3C2H4, and the new six-membered heterocycle (PMe)2(C2H2)2 are formed. The cyclocarbaphosphanes 1 and 2 were characterized by elemental analysis, mass, IR, Raman, and MR spectra. For the bicyclic compound 2 two diastereomers were obtained and separated. They differ in the position of the methine hydrogens and of the methyl substituents (cis-2 and trans-2). Compound 2 is also produced in the reaction of K2(PMe)4 * 2 THF with trans- 1,2-dichloroethylene whereas with 1,1,2,2- tetrachloroethane mainly (PMe)s is formed. In 1 and in each of the five-membered rings of cis-2 and trans-2 the methyl substituents at adjacent phosphorus atoms are situated on opposite sides of the ring.

Received: 1978-4-24
Published Online: 2014-6-2
Published in Print: 1978-7-1

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