EP 1181264 A1 20020227 - METHOD FOR PRODUCING 2,2,4,4-TETRA-SUBSTITUTED 1,3,5-CYCLOHEXANETRIONES
Title (en)
METHOD FOR PRODUCING 2,2,4,4-TETRA-SUBSTITUTED 1,3,5-CYCLOHEXANETRIONES
Title (de)
VERFAHREN ZUR HERSTELLUNG VON 2,2,4,4-TETRASUBSTITUIERTEN 1,3,5-CYCLOHEXANTRIONEN
Title (fr)
PROCEDE DE PRODUCTION DE 1,3,5- CYCLOHEXANETRIONES 2,2,4,4-TETRASUBSTITUEES
Publication
Application
Priority
- DE 19925145 A 19990602
- EP 0004567 W 20000519
Abstract (en)
[origin: WO0075095A1] The invention relates to a method for producing 2,2,4,4 tetra-substituted 1,3,5 - cyclohexanetriones of formula (I), by reacting a cyclobutane-1,3-diones of formula (II) with an O or N nucleophile and a silylation reagent and then subsequently by acetylisation and cyclisation.
IPC 1-7
C07C 45/45; C07C 49/403; C07C 49/39; C07C 49/453; C07C 69/757; C07F 7/18; C07C 67/313; C07C 69/716
IPC 8 full level
C07B 61/00 (2006.01); C07C 45/45 (2006.01); C07C 45/65 (2006.01); C07C 49/39 (2006.01); C07C 49/403 (2006.01); C07C 49/417 (2006.01); C07C 49/453 (2006.01); C07C 67/313 (2006.01); C07C 45/72 (2006.01); C07C 69/716 (2006.01); C07F 7/18 (2006.01)
CPC (source: EP KR US)
C07C 45/45 (2013.01 - KR); C07C 45/455 (2013.01 - EP US); C07C 49/453 (2013.01 - EP US); C07C 67/313 (2013.01 - EP US); C07C 69/716 (2013.01 - EP US); C07F 7/1804 (2013.01 - EP US)
C-Set (source: EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0075095 A1 20001214; AU 5214300 A 20001228; BR 0011111 A 20020219; CA 2375651 A1 20001214; CN 1353685 A 20020612; EP 1181264 A1 20020227; HU P0201400 A2 20020828; HU P0201400 A3 20021228; IL 146573 A0 20020725; JP 2003501408 A 20030114; KR 20020006051 A 20020118; MX PA01012344 A 20020709; US 6559343 B1 20030506
DOCDB simple family (application)
EP 0004567 W 20000519; AU 5214300 A 20000519; BR 0011111 A 20000519; CA 2375651 A 20000519; CN 00808280 A 20000519; EP 00936762 A 20000519; HU P0201400 A 20000519; IL 14657300 A 20000519; JP 2001501577 A 20000519; KR 20017015484 A 20011201; MX PA01012344 A 20000519; US 97999001 A 20011129