The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 1998
Filed:
Mar. 19, 1998
Il Nam Jung, Seoul, KR;
Bok Ryul Yoo, Koyang, KR;
Joon Soo Han, Seoul, KR;
Yeon Seok Cho, Seoul, KR;
Korea Institue of Science and Technology, Seoul, KR;
Abstract
The present invention relates to fluorenyl substituted organosilanes represented by the formula I and preparation methods thereof by reacting substituted biphenyls represented by the formul II with (dichloroalkyl)silanes represented by the formul III in the presence of Lewis acid catalysts such as aluminum chloride: ##STR1## (wherein m is 0 or 1 and n is 0, 1, or 2. y1 and y2 represent hydrogen, bromo, phenyl and they can be same or different. R represents hydrogen or methyl group. R.sub.j.sup.- can be dichloromethyl, 2,2-dichloroethyl, 3,3-dichloropropyl, 1,2-dichloroethyl, 2,3-dichloropropyl, 2,3-dichlorobutyl).