Production process for silicon compound and the same

A silicon compound represented by formula (2),

• wherein:
• in formula (2), each of seven R1 is independently selected from the group consisting of (a) hydrogen, (b) alkyl where each hydrogen may be optionally substituted with fluorine and each —CH2— group may be optionally replaced with —O—, —CH═CH—, cycloalkylene or cycloalkenylene, (c) substituted or unsubstituted aryl, and (d) substituted or unsubstituted arylalkyl where each hydrogen of the alkylene may be optionally substituted with fluorine and each —CH2— group of said alkylene may be optionally replaced with —O— or —CH═CH—;
• and A1 is an organic group that has an acyloxy group.

A silicon compound represented by formula (1), being prepared from a silicon compound represented by formula (2),

• wherein:
• in formula (1), each of seven R1 is independently selected from the group consisting of (a) hydrogen, (b) C1-C45 alkyl wherein each hydrogen may be optionally substituted with fluorine and each —CH2— group may be optionally replaced with —O—, —CH═CH—, cycloalkylene or cycloalkenylene, (c) substituted or unsubstituted aryl and (d) substituted or unsubstituted arylalkyl wherein each hydrogen of the alkenylene may be optionally substituted with fluorine and each —CH2— group of said alkenylene may be optionally replaced with —O— or —CH═CH—;
• and A2 is a hydroxyl-terminal organic group, and in formula (2), R1 is the same as R1 in formula (1) and A1 is an organic compound having an acyloxy group.