Beiträge zur Chemie des Phosphors, 127. Synthese der Hetero‐tricyclophosphane (RP)P 4 (C 2 H 4 ) 2 (R = Me, Et) und (Me 2 Si)P 4 (C 2 H 4 ) 2

Abstract

Contributions to the Chemistry of Phosphorus, 127. Synthesis of the Hetero Tricyclophosphanes (RP)P4(C2H4)2 (R = Me, Et) und (Me2Si)P4(C2H4)2 1,2,5,6-Tetraphosphabicyclo[3.3.0]octane (1a) or its dilithium salt (1b) react with geminale element dihalogen compounds such as MePCl2, EtPCl2 or Me2SiCl2 to the hitherto unknown 9-organyl-1,2,5,6,9-pentaphosphatricyclo[3.3.1.02,6]nonanes (2a, 2b) and 9,9-dimethyl-1,2,5,6-tetraphospha-9-silatricyclo[3.3.1.02,6]nonane (3), respectively. This is the first directed synthesis of tricyclophosphane skeletons from a bicyclophosphane.