EP 0970045 A1 2000-01-12 - PREPARATION OF 4-CYANO-4'-HYDROXY BIPHENYL
Title (en)
PREPARATION OF 4-CYANO-4'-HYDROXY BIPHENYL
Title (de)
HERSTELLUNG VON 4-CYANO-4'-HYDROXYBIPHENYL
Title (fr)
PREPARATION DU 4-CYANO-4'-HYDROXY BIPHENYLE
Publication
Application
Priority
- FR 9800290 W
- FR 9701862 A
Abstract (en)
[origin: FR2759697A1] The invention concerns a method for preparing 4-cyano-4'-hydroxy biphenyl, said method consisting in the following steps: protecting the hydroxy group of 4-phenyl-phenol, acylation of the protected 4-phenyl-phenol group, transforming the resulting ketone into an acid, amidation of the resulting acid, dehydrating the resulting amide and deprotecting the hydroxy group.
IPC 1-7 (main, further and additional classification)
IPC 8 full level (invention and additional information)
C07C 253/20 (2006.01); C07C 255/53 (2006.01)
CPC (invention and additional information)
C07C 253/20 (2013.01)
Combination set (CPC)
Citation (search report)
See references of WO 9837060A1
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE
EPO simple patent family
FR 2759697 A1 19980821; FR 2759697 B1 19990416; AU 6404598 A 19980909; CA 2280954 A1 19980827; CN 1248241 A 20000322; EP 0970045 A1 20000112; JP 2001511817 A 20010814; KR 20000071139 A 20001125; NO 993951 A 19990817; NO 993951 D0 19990817; NZ 337647 A 20000228; US 6160157 A 20001212; WO 9837060 A1 19980827
INPADOC legal status
2002-05-15 [18R] REFUSED
- Effective date: 20011214
2001-07-18 [17Q] FIRST EXAMINATION REPORT
- Effective date: 20010607
2000-01-12 [17P] REQUEST FOR EXAMINATION FILED
- Effective date: 19990910
2000-01-12 [AK] DESIGNATED CONTRACTING STATES:
- Kind Code of Ref Document: A1
- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE