Title:
PRODUCTION OF TRANS-DIFLUOROETHYLENE DERIVATIVE
Document Type and Number:
Japanese Patent JPH08119887
Kind Code:
A
Abstract:
PURPOSE: To readily and economically obtain a trans-difluoroethylene derivative useful as a liquid crystal compound in high yield and by a short process by reacting a specific trifluoroethylene compound with a Li compound.
CONSTITUTION: This compound of formula III is obtained by reacting (A) a compound of formula I [R2 is an (F-substituted) 1-10C alkyl, a halogen or CN; A4 is a (CN-substituted) 1,4-disubstituted cyclohexylene or a 1,4-disubstituted cyclohexenylene; Y2 is COO, C≡C or CH2CH2; A3 is a (CN-substituted) 1,4- disubstituted cyclohexenylene or 1,4-disubstituted phenylene; (n) is 0 or 1] with a compound of formula II [R1 is R2; A1 is A4; Y1 is Y2; A2 is a (CN-substituted) trans-1,4-disubstituted cyclohexylene; (m) is (n)].
Inventors:
SHIMIZU TAMAKI
YOKOKOJI OSAMU
KUMAI SEISAKU
YOKOKOJI OSAMU
KUMAI SEISAKU
Application Number:
JP25253994A
Publication Date:
May 14, 1996
Filing Date:
October 18, 1994
Export Citation:
Assignee:
ASAHI GLASS CO LTD
International Classes:
G02F1/13; C07C17/263; C07C22/00; C07C22/08; C07C25/24; C07C35/50; C07C39/42; C07C43/192; C07C43/225; C07C69/62; C07C69/66; C07C69/75; C07C69/753; C07C69/76; C07C69/773; C07C69/86; C07C69/92; C07C255/50; C07D211/14; C07D211/18; C07D211/38; C07D211/40; C07D239/26; C07D239/34; C07D319/06; C09K19/16; C09K19/18; C09K19/20; C09K19/30; C09K19/34; (IPC1-7): C07C22/00; C07C17/263; C07C22/08; C07C25/24; C07C35/50; C07C39/42; C07C43/192; C07C43/225; C07C69/62; C07C69/66; C07C69/75; C07C69/753; C07C69/76; C07C69/773; C07C69/86; C07C69/92; C07C255/50; C07D211/14; C07D211/18; C07D211/38; C07D211/40; C07D239/26; C07D239/34; C07D319/06; C09K19/16; C09K19/18; C09K19/20; C09K19/30; C09K19/34; G02F1/13
Attorney, Agent or Firm:
Kenji Izumina