72799-76-9Relevant academic research and scientific papers
STERICALLY HINDERED PHOSPHONITES
Pastor, Stephen D.,Spivack, John D.,Steinhuebel, Leander P.
, p. 169 - 176 (2007/10/02)
Phosphonochloridous and phosphonous esters were prepared from the reaction of phenylphosphonous dichloride with 2,4-di-tert-butylphenol, 2,6-di-tert-butyl-4-methylphenol, and 2,4,6-tri-tert-butylphenol.Various synthetic methodologies, including phase-transfer catalysis, are described and compared.Phosphonous diesters containing two different substituted-phenyl moieties were prepared from phosphonochloridous monoesters.The reaction of O-(2,6-di-tert-butyl-4-methylphenyl)-phenylphosphonochloridite with N-methyldiethanolamine, n-octyl mercaptan, and water was studied and found to give a biphosphonite, phosphonothioite and phosphinate, respectively.
Hydrolytically stable ortho-alkylated phenyl phosphonites and stabilized compositions
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, (2008/06/13)
Hydrolytically stable, ortho-alkylated phenyl phosphonites of the formula STR1 wherein R1 and R2 are alkyl or phenylalkyl, R3 is hydrogen, alkyl or carboalkoxyalkyl, R4 is alkyl, phenyl or phenyl substituted by alkyl, R5 is halogen, --XH or XR6 where X is O or S and R6 is phenyl substituted by alkyl, phenylalkyl or carboalkoxyalkyl, are useful as stabilizers for organic polymers and lubricating oils, particularly as processing stabilizers for polyolefins.
