Silicon compound

1. A silicon compound represented by Formula (1):

in Formula (1), seven R 1 's are groups independently selected respectively from the group consisting of hydrogen, alkyl, substituted or non-substituted aryl and substituted or non-substituted arylalkyl; A 1 is an organic group substituted with a halogenated sulfonyl group; in the alkyl group, hydrogen may be optionally replaced by fluorine, and —CH 2 — may be optionally replaced by —O—, —CH═CH—, cycloalkylene or cycloalkenylene; and in the alkylene moiety of the arylalkyl group, hydrogen may be optionally replaced by fluorine, and —CH 2 — may be optionally replaced by —O— or —CH═CH—.

2. The silicon compound as described in claim 1 , wherein seven R 1 's in Formula (1) are groups independently selected respectively from the group consisting of hydrogen, alkyl having a carbon number of 1 to 45, substituted or non-substituted aryl and substituted or non-substituted arylalkyl; in the alkyl group having a carbon number of 1 to 45, hydrogen may be optionally replaced by fluorine, and —CH 2 — may be optionally replaced by —O—, —CH═CH—, cycloalkylene or cycloalkenylene; and

in the alkylene moiety of the arylalkyl group, hydrogen may be optionally replaced by fluorine, and —CH 2 — may be optionally replaced by —O— or —CH═CH—.

3. The silicon compound as described in claim 1 , wherein seven R 1 's in Formula (1) are groups independently selected respectively from the group consisting of hydrogen and alkyl having a carbon number of 1 to 30; and

in the alkyl group having a carbon number of 1 to 30, hydrogen may be optionally replaced by fluorine, and —CH 2 — may be optionally replaced by —O— or cycloalkylene.

4. The silicon compound as described in claim 1 , wherein seven R 1 's in Formula (1) are groups independently selected respectively from the group consisting of alkenyl having a carbon number of 1 to 20 and a group in which —CH 2 — is optionally replaced by cycloalkenylene in alkyl having a carbon number of 1 to 20;

in the alkenyl having a carbon number of 1 to 20, hydrogen may be optionally replaced by fluorine, and —CH 2 — may be optionally replaced by —O— or cycloalkylene; and

in the group in which —CH 2 — is optionally replaced by cycloalkenylene in alkyl having a carbon number of 1 to 20, hydrogen may be optionally replaced by fluorine.

5. The silicon compound as described in claim 1 , wherein seven R 1 's in Formula (1) are groups independently selected respectively from the group consisting of naphthyl and phenyl in which hydrogen may be optionally replaced by halogen or alkyl having a carbon number of 1 to 10;

in the alkyl group having a carbon number of 1 to 10, hydrogen may be optionally replaced by fluorine, and —CH 2 — may be optionally replaced by —O—, —CH═CH—, cycloalkylene or phenylene.

6. The silicon compound as described in claim 1 , wherein seven R 1 's in Formula (1) are groups independently selected respectively from the group consisting of phenylalkyls in which hydrogen on a benzene ring may be optionally replaced by halogen or alkyl having a carbon number of 1 to 12;

in the alkyl group having a carbon number of 1 to 12, hydrogen may be optionally replaced by fluorine, and —CH 2 — may be optionally replaced by —O—, —CH═CH—, cycloalkylene or phenylene; and

in the alkylene moiety of the phenylalkyl group, which has a carbon number of 1 to 12, hydrogen may be optionally replaced by fluorine, and —CH 2 — may be optionally replaced by —O— or —CH═CH—.

7. The silicon compound as described in claim 1 , wherein seven R 1 's in Formula (1) are groups independently selected respectively from the group consisting of alkyl having a carbon number of 1 to 8, phenyl, non-substituted naphthyl and phenylalkyl;

in the alkyl aroup having 1 to 8 carbon atoms, hydrogen may be optionally replaced by fluorine, and —CH 2 — may be optionally replaced by —O—, —CH═CH—, cycloalkylene or cycloalkenylene;

in the phenyl, hydrogen may be optionally replaced by halogen, methyl or methoxy;

in phenyl in the phenylalkyl group, hydrogen may be optionally replaced by fluorine, alkyl having a carbon number of 1 to 4, ethenyl or methoxy; the alkylene moiety of the phenylalkyl group has a carbon number of 1 to 8, and —CH 2 — in the alkylene moiety may be optionally replaced by —O— or —CH═CH—.

8. The silicon compound as described in claim 1 , wherein seven R 1 's in Formula (1) are one group selected from the group consisting of alkyl having a carbon number of 1 to 8, phenyl, non-substituted naphthyl and phenylalkyl;

in the alkyl having a carbon number of 1 to 8, hydrogen may be optionally replaced by fluorine, and —CH 2 — may be optionally replaced by —O—, —CH═CH—, cycloalkylene or cycloalkenylene;

in the phenyl, hydrogen may be optionally replaced by halogen, methyl or methoxy;

in phenyl in the phenylalkyl group, hydrogen may be optionally replaced by fluorine, alkyl having a carbon number of 1 to 4, ethenyl or methoxy;

the alkylene moiety of the phenylalkyl group has a carbon number of 1 to 8, and —CH 2 —in the alkylene moiety may be optionally replaced by —O— or —CH═CH—.

9. The silicon compound as described in claim 1 , wherein seven R 1 's in Formula (1) are one group selected from the group consisting of phenyl, naphthyl and phenylalkyl;

in the phenyl, hydrogen may be optionally replaced by halogen, methyl or methoxy;

in phenyl in the phenylalkyl group, hydrogen may be optionally replaced by fluorine, alkyl having a carbon number of 1 to 4, ethenyl or methoxy;

the alkylene moiety of the phenylalkyl group has a carbon number of 1 to 8, and —CH 2 — in the alkylene moiety may be optionally replaced by —O—.

10. The silicon compound as described in claim 1 , wherein seven R 1 's in Formula (1) are ethyl, 2-methylpropyl, 2,4,4-trimethylpentyl, 3,3,3-trifluoropropyl, cyclopentyl, cyclohexyl or non-substituted phenyl.

11. The silicon compound as described in claim 1 , wherein seven R 1 's in Formula (1) are non-substituted phenyl.

12. The silicon compound as described in any of claims 1 to 11 , wherein A 1 in Formula (1) described in claim 1 is a group represented by Formula (2):

in Formula (2), X is halogen; R 2 is alkyl having a carbon number of 1 to 3; a is an integer of 0 to 2; Z 1 is a single bond or alkylene having a carbon number of 1 to 10; in the alkylene having a carbon number of 1 to 10, —CH 2 — may be optionally replaced by —O—, —COO— or —OCO—; and both of the bonding positions of halogenated sulfonyl and R 2 on the benzene ring are optional positions.

13. The silicon compound as described in claim 12 , wherein Z 1 in Formula (2) is Z 2 —C 2 H □ —; Z 2 is a single bond,or alkylene having a carbon number of 1 to 8, and —CH 2 — in the alkylene group may be optionally replaced by —O—, —COO— or —OCO—.

14. The silicon compound as described in claim 12 , wherein in Formula (2), Z 1 is —C 2 H 4 —; X is chlorine or bromine; and a is 0.

15. A production process for the silicon compound represented by Formula (1) as described in claim 1 , which comprises reacting a compound represented by Formula (3) with trichlorosilane having a halogenated sulfonyl group:

in Formula (3), seven R 1 's are groups independently selected respectively from the group consisting of hydrogen, alkyl, substituted or non-substituted aryl and substituted or non-substituted arylalkyl; in the alkyl group, hydrogen may be optionally replaced by fluorine, and —CH 2 — may be optionally replaced by —O—, —CH═CH—, cycloalkylene or cycloalkenylene; and in the alkylene moiety of the arylalkyl group, hydrogen may be optionally replaced by fluorine, and —CH 2 — may be optionally replaced by —O— or —CH═CH—.

16. A production process for a silicon compound represented by Formula (5), which comprises reacting a compound represented by Formula (3) with a compound represented by Formula (4):

wherein R 1 in Formula (3) is one group selected from the group consisting of alkyl having a carbon number of 1 to 8, phenyl, non-substituted naphthyl and phenylalkyl; in the alkyl group having a carbon number of 1 to 8, hydrogen may be optionally replaced by fluorine, and —CH 2 — may be optionally replaced by —O—, —CH═CH—, cycloalkylene or cycloalkenylene; hydrogen in the phenyl may be optionally replaced by halogen, methyl or methoxy; in the phenylalkyl, hydrogen on a benzene ring may be optionally replaced by fluorine, alkyl having a carbon number of 1 to 4, ethenyl or methoxy, and —CH 2 — in the alkylene moiety may be optionally replaced by —O—; R 1 in Formula (5) has the same meaning as that of R 1 in Formula (3); in Formula (4), X is halogen; R 2 is alkyl having a carbon number of 1 to 3; a is an integer of 0 to 2; Z 2 is a single bond or alkylene having 1 to 8 carbon atoms; in the alkylene group having a carbon number of 1 to 8, —CH 2 — may be optionally replaced by —O—, —COO— or —OCO—; both of the bonding positions of halogenated sulfonyl and R 2 on the benzene ring are optional positions; and the meanings of X, R 2 , and Z 2 in Formula (5) and the bonding positions of halogenated sulfonyl and R 2 on the benzene ring are the same as those in Formula (4).

17. A production process for the silicon compound represented by Formula (1) as described in claim 1 , which comprises reacting a compound represented by Formula (6) with trichiorosilane having a halogenated sulfonyl group:

in Formula (6), seven R 1 's are groups independently selected respectively from the group consisting of hydrogen, alkyl, substituted or non-substituted aryl and substituted or non-substituted arylalkyl; M is a monovalent alkali metal atom; in the alkyl group, hydrogen may be optionally replaced by fluorine, and —CH 2 —may be optionally replaced by —O—, —CH═CH—, cycloalkylene or cycloalkenylene; and in the alkylene moiety of the arylalkyl group, hydrogen may be optionally replaced by fluorine, and —CH 2 — may be optionally replaced by —O— or —CH═CH—.

18. A production process for a silicon compound represented by Formula (5), which comprises reacting a compound represented by Formula (6) with a compound represented by Formula (4):

in Formula (6), R 1 is one group selected from the group consisting of alkyl having a carbon number of 1 to 8, phenyl, non-substituted naphthyl and phenylalkyl; M is a monovalent alkali metal atom; in the alkyl group having a carbon number of 1 to 8, hydrogen may be optionally replaced by fluorine, and —CH 2 — may be optionally replaced by —O—, —CH═CH—, cycloalkylene or cycloalkenylene; hydrogen in the phenyl may be optionally replaced by halogen, methyl or methoxy; in the phenylalkyl group, hydrogen on a benzene ring may be optionally replaced by fluorine, alkyl having 1 to 4 carbon atoms, ethenyl or methoxy, and —CH 2 —in the alkylene moiety may be optionally replaced by —O—;

R 1 in Formula (5) has the same meaning as that of R 1 in Formula (6); in Formula (4), X is halogen; R 2 is alkyl having 1 to 3 carbon atoms; a is an integer of 0 to 2; Z 2 is a single bond or alkylene having a carbon number of 1 to 8; in the alkylene group having a carbon number of 1 to 8, —CH 2 — may be optionally replaced by —O—, —COO— or —OCO—; both of the bonding positions of halogenated sulfonyl and R 2 on the benzene ring are optional positions; and the meanings of X, R 2 , and Z 2 in Formula (5) and the bonding positions of halogenated sulfonyl and R 2 on the benzene ring are the same as those in Formula (4).

19. A polymer obtained by polymerizing a vinyl base monomer using the silicon compound represented by Formula (1) as described in claim 1 as an initiator and a transition metal complex as a catalyst.

20. A polymer represented by Formula (7) obtained by polymerizing a vinyl base monomer using the silicon compound represented by Formula (1) as described in claim 18 as an initiator and a transition metal complex as a catalyst:

the meanings of R 1 , Z 2 , R 2 , a and X in Formula (7) and the bonding positions of halogenated sulfonyl and R 2 on the benzene ring are the same as those in Formula (6) as described in claim 18 , and P is a vinyl base polymer.

21. The polymer as described in claim 19 or 20 , wherein the vinyl base monomer is at least one selected from the group consisting of a (meth)acrylic acid derivative and a styrene derivative.

22. The polymer as described in claim 19 or 20 , wherein the vinyl base monomer is at least one selected from the group consisting of the (meth)acrylic acid derivatives.

23. A polymerization process for a vinyl base monomer which comprises using the silicon compound represented by Formula (1) as described in claim 1 as an initiator and using a transition metal complex as a catalyst.

24. A production process for the polymer represented by Formula (7):

the meanings of R 1 , Z 2 , R 2 , a and X in Formula (7) and the bonding positions of halogenated sulfonyl and R 2 on the benzene ring are the same as those in Formula (6) as described in claim 18 , and P is a vinyl base polymer, which comprises polymerizing a vinyl base monomer using the compound represented by Formula (5) as described in claim 18 as an initiator and using a transition metal complex as a catalyst.