Global patent index - EP 0970045 A1

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

EP 0970045 A1 (FR)

Application

EP 98909542 A

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)

C07C 255/53; C07C 253/20

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)

C07C 253/20 + C07C 255/53

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