976-56-7Relevant articles and documents
Process for the preparation of sterically hindered hydroxybenzylphosphonates
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, (2008/06/13)
A process is described for the preparation of hydroxybenzylphosphonates of the formula I STR1 which involves A) reacting a phenol of the formula II STR2 with an amine of the formula III STR3 formaldehyde or paraformaldehyde and a protonic acid Hn A to give a salt of the formula IV STR4 B) distilling off the water of reaction which forms, and C) reacting the reaction mixture, or the salt IV isolated therefrom, with a trialkyl phosphite of the formula STR5 in which Hn A is an organic or inorganic acid having n protons, n is 1, 2, 3 or 4, R1 and R2 independently of one another are C1 -C12 alkyl or C5 -C7 cycloalkyl, R3 and R4 independently of one another are C1 -C12 alkyl or form, together with the nitrogen atom attached to them, a piperidyl or morpholinyl radical, and R5, R6 and R7 independently of one another are C1 -C4 alkyl; and the compounds of the formula I are suitable, for example, as processing stabilizers for plastics.
SYNTHESIS OF DIALKYL(ARYL)(3,5-DI-tert-BUTYL-4-HYDROXYBENZYL)PHOSPHONATES
Mukmeneva, N. A.,Kadyrova, V.Kh.,Zharkova, V.M.
, p. 1372 (2007/10/02)
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NEW SYNTHESIS OF DIALKYL(3,5-DI-tert-BUTYL-4-HYDROXYBENZYL)PHOSPHONATES
Mukmeneva, N. A.,Cherkasova, O. A.,Kadyrova, V. Kh.
, p. 380 - 381 (2007/10/02)
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