Process for producing 1,3-bis(dicarboxyphenyl)-disiloxane deriva

Details Process for producing 1,3-bis(dicarboxyphenyl)-disiloxane deriva Process for producing 1,3-bis(dicarboxyphenyl)-disiloxane deriva

1991-12-09

1992-11-24

Ivy, C. Warren

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

556453, 556463, C07F 707, C07F 720

Patent

active

051663635

ABSTRACT:
A process for producing (i) a 1,3-bis(dicarboxyphenyl)disiloxane derivative represented by the general formula ##STR1## wherein Rs and R's independently of one another denote methyl or phenyl or (ii) a 1,3-bis(dicarboxyphenyl)-disiloxane derivative dianhydride represented by the general formula ##STR2## wherein Rs and R's are as defined above, the process comprising coupling a Grignard reagent of halo-o-xylene with a disubstituted halosilane represented by the general formula ##STR3## wherein R and R' are as defined above and X denotes halogen, to form a dimethylphenyl(disubstituted silane) represented by the general formula ##STR4## wherein R and R' are as defined above, hydroxylating the dimethylphenyl(disubstituted silane) to form a dimethylphenyl(disubstituted hydroxysilane) represented by the general formula ##STR5## wherein R and R' are as defined above, to form a 1,3-bis(dimethylphenyl)-disilane

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Helvetica Chimica Acta, vol. 57, No. 110, fasc. 4, Jun. 5, 1974 pp. 1010-1015.
McMurry, John; "Organic Chemistry", p. 776, Chapter 24, Brooks/Cole Co., USA 1984.

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