Accession Number:

ADA141512

Title:

Substitution and Addition Reactions of a (Methylene)phosphine with Alkyllithium Reagents.

Descriptive Note:

Technical rept. for period ending 1983,

Corporate Author:

TEXAS CHRISTIAN UNIV FORT WORTH DEPT OF CHEMISTRY

Personal Author(s):

• Li,B. L.
• Neilson,R. H.

Report Date:

1984-05-18

Pagination or Media Count:

12.0

Abstract:

Treatment of the methylenephosphine Me3Si2NPCHSiMe3 1 with alkyllithium reagents and Me3SiCl affords either the diphosphinomethane derivative R2P-CHSiMe3-PRCHSiMe32 2, R Me or the trialkylphosphine R2PCHSiMe32 3, R t-Bu. A reaction pathway involving both nucleophilic substitution and addition reactions at the PC moiety is suggested. Compound 2 exhibits hindered rotation about the P-CHSiMe32 bond with a measured delta G sub c of 17.7 kcalmole. Author

Descriptors:

• *Phosphine
• *Methylenes
• *Substitution reactions
• *Addition reactions
• Alkyl radicals
• Lithium compounds
• Nucleophilic reactions
• Rotation(Chemical bonds)

Subject Categories:

• Organic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE