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. 12, 1989
Filed:
Dec. 18, 1987
Applicant:
Inventors:
Shigeru Torii, Okayama, JP;
Masatoshi Taniguchi, Tokushima, JP;
Michio Sasaoka, Tokushima, JP;
Yoshihisa Tomotaki, Tokushima, JP;
Mitsuo Akada, Tokushima, JP;
Hideo Tanaka, Okayama, JP;
Akira Suzuki, Kurashiki, JP;
Shiro Yamashita, Kurashiki, JP;
Assignee:
Otsuka Kagaku Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
549434 ; 534584 ; 549445 ; 558379 ; 558383 ; 558401 ; 558423 ; 558425 ; 558434 ; 560104 ; 560128 ; 560211 ; 560214 ; 562599 ; 564182 ; 568338 ; 568364 ; 568376 ; 568407 ; 568631 ; 568648 ; 568654 ; 568765 ; 568772 ; 568774 ; 568908 ; 570182 ; 570183 ; 570190 ; 570193 ; 570200 ; 570216 ; 570218 ; 570226 ; 570227 ; 570230 ;
Abstract
The present invention provides a process for preparing a 1,1-disubstituted ethylene derivative of the formula ##STR1## which comprises reacting lead with a carbinol derivative of the formula ##STR2## wherein R.sup.1, R.sup.2, R.sup.3, X, Y, m and n are defined in the specification. The reaction is conducted more advantageously in the presence of a metal having higher ionization tendency than lead.