Silicon Compound Containing Hexafluoroisopropanol Group, and Method for Producing Same

A production method of a silicon compound of the formula (2), comprising the following step:

• a first step of reacting an aromatic silicon compound of the formula (1) with hexafluoroacetone in the presence of a Lewis acid catalyst, thereby obtaining the silicon compound of the formula (2)
• where Ph is an unsubstituted phenyl group;
• R1 is each independently a C1-C10 linear, C3-C10 branched or C3-C10 cyclic alkyl group, or a C2-C10 linear, C3-C10 branched or C3-C10 cyclic alkenyl group;
• a part or all of hydrogen atoms of the alkyl group or alkenyl group as R1 may be substituted with a fluorine atom;
• X is a halogen atom;
• a is an integer of 1 to 3;
• b is an integer of 0 to 2;
• c is an integer of 1 to 3;
• a relationship of a+b+c=4 is satisfied;
• and n is an integer of 1 to 5.

A production method of a silicon compound of the formula (4), comprising the following steps:

• a first step of reacting an aromatic silicon compound of the formula (1) with hexafluoroacetone in the presence of a Lewis acid catalyst, thereby obtaining a silicon compound of the formula (2);
• and
• a second step of forming the silicon compound of the formula (4) by reacting the silicon compound of the formula (2) obtained in the first step with an alcohol of the formula (3)
• where Ph is an unsubstituted phenyl group;
• R1 is each independently a C1-C10 linear, C3-C10 branched or C3-C10 cyclic alkyl group, or a C2-C10 linear, C3-C10 branched or C3-C10 cyclic alkenyl group;
• a part or all of hydrogen atoms of the alkyl group or alkenyl group as R1 may be substituted with a fluorine atom;
• X is a halogen atom;
• a is an integer of 1 to 3;
• b is an integer of 0 to 2;
• c is an integer of 1 to 3;
• a relationship of a+b+c=4 is satisfied;
• n is an integer of 1 to 5;
• R2 is each independently a C1-C4 linear or C3-C4 branched alkyl group;
• and a part or all of hydrogen atoms of the alkyl group as R2 may be substituted with a fluorine atom.

A production method of a silicon compound of the formula (4), comprising the following step:

• a second step of reacting a silicon compound of the formula (2) with an alcohol of the formula (3), thereby forming the silicon compound of the formula (4)
• where R1 is each independently a C1-C10 linear, C3-C10 branched or C3-C10 cyclic alkyl group, or a C2-C10 linear, C3-C10 branched or C3-C10 cyclic alkenyl group;
• a part or all of hydrogen atoms of the alkyl group or alkenyl group as R1 may be substituted with a fluorine atom;
• X is a halogen atom;
• a is an integer of 1 to 3;
• b is an integer of 0 to 2;
• c is an integer of 1 to 3;
• a relationship of a+b+c=4 is satisfied;
• n is an integer of 1 to 5;
• R2 is each independently a C1-C4 linear or C3-C4 branched alkyl group;
• and a part or all of hydrogen atoms of the alkyl group as R2 may be substituted with a fluorine atom.

A production method of a polysiloxane polymer (A) with a repeating unit of the formula (5), comprising the following step:

• a fourth step of subjecting a silicon compound of the formula [2] to hydrolysis and polycondensation, thereby obtaining the polysiloxane polymer (A)
• where R1 is each independently a C1-C10 linear, C3-C10 branched or C3-C10 cyclic alkyl group, or a C2-C10 linear, C3-C10 branched or C3-C10 cyclic alkenyl group;
• a part or all of hydrogen atoms of the alkyl group or alkenyl group as R1 may be substituted with a fluorine atom;
• X is a halogen atom;
• a is an integer of 1 to 3;
• b is an integer of 0 to 2;
• c is an integer of 1 to 3;
• a relationship of a+b+c=4 is satisfied;
• n is an integer of 1 to 5;
• R2 is each independently a C1-C4 linear or C3-C4 branched alkyl group;
• and a part or all of hydrogen atoms of the alkyl group as R2 may be substituted with a fluorine atom.