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1.发明专利
公开(公告)号：JP2002220366A
公开(公告)日：2002-08-09
申请号：JP2001377549
申请日：2001-12-11
Applicant: BASF AG
Inventor： PRECHTL FRANK , HAREMZA SYLKE , PARKER ROBERT , KUERSCHNER KATHRIN , BRAUN MANFRED , HAHN ANTJE , FLEISCHER RALF
Abstract: PROBLEM TO BE SOLVED: To provide the use of a chiral non-charged compound as a doping agent for a liquid crystal material, and such a compound and a liquid crystal material. SOLUTION: This chirality is shown by general formula Ia: [(P1-Y1-A1-Y2-M1- Y3-)nL] 2Me, or general formula Ib: [(P1-Y1-A1-Y2-M1-Y3-)nL]M(L'(-Y6-M2-Y5-A2- Y4-P2)n')m, and used as the doping agent for the liquid crystal material of the non-charged compound. Such a compound is shown by general formula IIIa: [(P1-Y1-A1-Y2-M1-Y3-)L]2Me, or general formula IIIb: [(P1-Y1-A1-Y2-M1-Y3-) L]Me(L'(-Y6-M2-Y5-A2-Y4-P2)n')m, and specifically exemplified by a compound shown by formula IV (wherein, the left-hand O-N-O part is shown by formula V; M is titanium).
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公开(公告)号：DE3063676D1
公开(公告)日：1983-07-14
申请号：DE3063676
申请日：1980-07-01
Applicant: BASF AG
Inventor： NISSEN AXEL DR , KAIBEL GERD , WOERZ OTTO , ARNOLD LOTHAR DR , BRAUN MANFRED , REBAFKA WALTER DR
Abstract: An improved process for the preparation of higher unsaturated ketones, such as geranylacetone and farnesylacetone, by reacting a beta , gamma -unsaturated alcohol and an alkyl acetoacetate at an elevated temperature in the presence of an organic aluminum compound, with elimination, and removal, of the alcohol derived from the alkyl acetoacetate in a reactor system carrying a fractionating column. The improvement in the purity, yield, and especially space-time yield of the product is achieved by starting from an alcohol having a higher boiling point than that of the alkyl acetoacetate used, carrying out the reaction in the presence of a small amount of an inert liquid which has a boiling point between that of the alkyl acetoacetate and the alcohol to be eliminated therefrom, and ensuring that the temperature at the bottom of the fractionating column is only slightly higher than the boiling point of the added liquid, under the prevailing pressure.
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公开(公告)号：DE10061625A1
公开(公告)日：2002-06-13
申请号：DE10061625
申请日：2000-12-11
Applicant: BASF AG
Inventor： PRECHTL FRANK , HAREMZA SYLKE , PARKER ROBERT , KUERSCHNER KATHRIN , BRAUN MANFRED , HAHN ANTJE , FISCHER RALF
Abstract: The use of chiral, uncharged metal compounds containing two tridentate ligands with mesogenic groups, spacer groups and other groups as dopants for liquid crystalline materials. The use of chiral, uncharged compounds of formula (Ia) or (Ib) as dopants for liquid crystalline (LC) materials. ((P -Y -A -Y M -Y -)nL)2Me (Ia) ((P -Y -A -Y -M -Y -)nL)Me(L'(-Y -M -Y -A -Y -P )n')m (Ib) P , P = H, 1-12C alkyl, polymerizable groups, groups suitable for polymerization, or residues bearing such polymerizable groups; Y -Y = single bonds, -O-, -S-, -CO-, -COO-, -OCO-, -CONR-, -NRCO-, -OCOO-, -OCONR-, -NRCOO- or -NRCONR-; R = H or 1-4C alkyl; A , A = 1-30C spacer groups; M , M = mesogenic groups; n, n' = 0 or 1; m = 1, 2 or 3; Me = a transition metal of Period 4, 5 or 6 (other than technetium, silver, cadmium, gold, mercury or lanthanides) or a Main Group 14 element (other than carbon or lead); L = a tridentate ligand of formula (II); U, V, W = nitrogen-, phosphorus- or sulfur-containing groups with N, O, P or S atoms with free electron pair(s) for coordination with the central metal atom (Me); b1, b2 = 2-3C alkylene bridges attached to U and V or V and W, optionally substituted with up to two 1-12C organic residues in the case of 2C bridges and up to 4 such residues in other cases, and in which 2 adjacent carbon atoms may form part of an optionally substituted, optionally anellated benzene ring; L' = a 1-12C organic group. The groups L'(Y -M -Y -A -Y -P )n' in formula (Ib) may be different. Independent claims are also included for the following: (1) New compounds of formula (IIIa) and (IIIb). (2) LC materials containing compound(s) (Ia) and/or (Ib) or (IIIa) and/or (IIIb). ((P -Y -A -Y M -Y -)L)2Me (IIIa) ((P -Y -A -Y -M -Y -)L)Me(L'(-Y -M -Y -A -Y -P )n')m (IIIb) n' = 0 or 1.
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公开(公告)号：DE2928944A1
公开(公告)日：1981-02-12
申请号：DE2928944
申请日：1979-07-18
Applicant: BASF AG
Inventor： NISSEN AXEL DIPL CHEM DR , KAIBEL GERD DIPL ING , REBAFKA WALTER DIPL CHEM DR , WOERZ OTTO DIPL CHEM DR , ARNOLD LOTHAR DIPL CHEM DR , BRAUN MANFRED
Abstract: An improved process for the preparation of higher unsaturated ketones, such as geranylacetone and farnesylacetone, by reacting a beta , gamma -unsaturated alcohol and an alkyl acetoacetate at an elevated temperature in the presence of an organic aluminum compound, with elimination, and removal, of the alcohol derived from the alkyl acetoacetate in a reactor system carrying a fractionating column. The improvement in the purity, yield, and especially space-time yield of the product is achieved by starting from an alcohol having a higher boiling point than that of the alkyl acetoacetate used, carrying out the reaction in the presence of a small amount of an inert liquid which has a boiling point between that of the alkyl acetoacetate and the alcohol to be eliminated therefrom, and ensuring that the temperature at the bottom of the fractionating column is only slightly higher than the boiling point of the added liquid, under the prevailing pressure.
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