Accession Number:

ADA159829

Title:

Preparation of P-N-H and P-P Compounds from a Silylated Amino(Methylene) phosphine,

Descriptive Note:

Technical rept.,

Corporate Author:

TEXAS CHRISTIAN UNIV FORT WORTH DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

1985-10-03

Pagination or Media Count:

17.0

Abstract:

Secondary amines react with the silylated aminomethylene-phosphine Me3Si2NPCHSiMe3 doublebond 1 by a complex process involving Si-N bond cleavage as well as addition tot he P-C doublebond. Thus, treatment of 1 with Et2NH yields either the N-H phosphine Me3SiNHPNEt2CH2SiMe3 2 or the unexpected P superscript V-pIII product Me3SiN-doublebond PNEt2CH2Me3-PCH2SiMe3NSiMe32 3, depending upon the reaction stoichiometry. In two separate experiments iwt mechanistilc implications a 2 was prepared from the reaction of Et2NH with Me3Si2NPNEtCH2SiMe3 la, the presumed intermediate in the Et2NH1 reaction, and 2 3 was prepared directly by addition of the N-H compound 2 to the methylenephosphine 1. Compound 2 is smoothly oxidized by CCl4 to the P-chlorophosphoranimine Me3SiN-PClNEt2CH2SiMe3 doublebond 4 or deprotonated by n-BuLi. THe ambident anion thus formed reacts with the chlorophosphines Ph2PCl and Me3Si2NPClCH2SiMe3 to yield the P-P products Me3SiN-doublebond PNEt2CHSiMe3-PPh2 5 and compound 3, respectively. Author

Subject Categories:

  • Inorganic Chemistry
  • Organic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE