HIGH-TEMPERATURE STABLE SEMIORGANIC FLUIDS. PART III. PHOSPHINE OXIDES. Period covered : April 15, 1958 to February 15, 1959

Technical Report · Tue Mar 31 04:00:00 UTC 1959

OSTI ID:4234956

Grafstein, D; Dudak, R; Cohen, M S

The heretofore undescribed organophosphonyl fluorides were prepared and characterized. Unlike the corresponding chlorides, the organophosphonyl fluorides condense smoothly with organometallic reagents to give very high yields of the tertiary phosphine oxides. This represents a new one-step general synthesis of the phosphine oxides. Benzenephosphonyl difluoride, chloromethylphosphonyl difluoride and phenyl p-tolylphosphonyl fluoride were prepared for the first time and used as intermediates to the following phosphine oxides: triphenylphosphine oxide, phenyl-bis (pbiphenyl)-phosphine oxide, phenyl- bis (p-tolyl)-phosphine oxide, chloromethyldiphenylphosphine oxide, phenyl-o- tolyl-p-tolylphosphine oxide and phenyldimethylphosphine oxide. The thermal stabilities of the phosphine oxides were measured by an improved kinetic method. Phenyl-bis(p-biphenyl)-phosphine oxide was found to be thermally stable at 400 deg C and to undergo rapid thermal decomposition at 448 deg C. (auth)

• Research Organization: Thiokol Chemical Corp. Reaction Motors Div., Denville, N.J.
• NSA Number: NSA-13-018946
• OSTI ID: 4234956
• Report Number(s): WADC-TR-57-45(Pt.III)
• Country of Publication: United States
• Language: English

Related Subjects

CHEMICAL REACTIONS
CHEMISTRY
CHLORIDES
FLUIDS
FLUORIDES
HIGH TEMPERATURE
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
ORGANOMETALLICS
OXIDES
PHOSPHINES
PRODUCTION
STABILITY