CAS: 19446-52-7; Lanthanum(Iii) Isopropoxide

专利信息

专利号:US-2024336586-A1
优先权日:2021-07-29
标题:Methods for synthesis of racemic, scalemic, and chiral alpha-tocotrienol quinone
发明人：GIANNOUSIS PETER; MOLLARD PAUL; GOUDEDRANCHE SEBASTIEN; KARASAWA TOMOYA
权利人:PTC THERAPEUTICS INC
摘要:The application discloses methods useful for the synthesis of racemic, scalemic, and chiral alpha-tocotrienol quinone, including synthetic intermediates and methods for making said synthetic intermediates.

专利号:US-RE36718-E
优先权日:1993-06-29
标题:Optically active aminoalcohol derivatives and method of producing same
发明人：MITSUDA MASARU; HAYASHI SHIGEO; HASEGAWA JUNZO; UEYAMA NOBORU; OHASHI TAKEHISA; SHIBASAKI MASAKATSU
权利人:KANEKA CORP
摘要:PCT No. PCT/JP94/01049 Sec. 371 Date Jun. 21, 1995 Sec. 102(e) Date Jun. 21, 1995 PCT Filed Jun. 29, 1994 PCT Pub. No. WO95/01323 PCT Pub. Date Jan. 12, 1995An object of the present invention is to provide a safe method of commercially producing optically active aminoalcohol derivatives, which serve as intermediates for the synthesis of medicinal chemicals such as the immunopotentiating anticancer agent bestatin, in a simple and easy manner in high yields and with high levels of selectivity. The present invention consists in a method of producing 3-amino-1-nitro-4-phenyl-2-butanol derivatives of the general formula (1) wherein R1 and R2 each independently represents a hydrogen atom or an amino group protecting group, and a method of producing 3-amino-2-hydroxy-4-phenylbutyric acid derivatives derivable therefrom.

专利号:US-5858451-A
优先权日:1997-07-29
标 题 :Process for production of solution-derived (Pb,La)(Nb,Sn,Zr,Ti)O3 thin films and powders
发明人：BOYLE TIMOTHY J
权利人:SANDIA CORP
摘要:A simple and rapid process for synthesizing (Pb,La)(Nb,Sn,Zr,Ti)O 3 precursor solutions and subsequent ferroelectric thin films and powders of the perovskite phase of these materials has been developed. This process offers advantages over standard methods, including: rapid solution synthesis (<10 minutes), use of commercially available materials, film production under ambient conditions, ease of lanthanum dissolution at high concentrations, and no heating requirements during solution synthesis. For lanthanum-doped ferroelectric materials, the lanthanum source can be added with total synthesis time less than 10 minutes. Films and powders are crystallized at approximately 650° C. and exhibit ferroelectric properties comparable to films and powders produced by other techniques which require higher crystallization temperatures.

专利号:US-7371578-B2
优先权日:2002-06-03
标 题:Method of evaluating the catalytic activity of a rare earth alkoxide
发明人：KUBOSHIMA YOSHINORI; MATSUNAGA SHIGEKI; SHIBASAKI MASAKATSU
权利人:KABUSHIKIKAISHA KOJUNDOKAGAKU
摘要:This invention provides a method of evaluating the catalytic activity of a rare earth alkoxide used as a starting material of a basic catalyst or an asymmetric synthesis catalyst. The rare earth alkoxide used as the subject of evaluation and 2,2′-dihydroxy-1, 1′-binaphthol are used as the starting material to prepare a rare earth complex catalyst which is then used to conduct the asymmetric epoxidation of an enone. The epoxy enone formed by this reaction, the unreacted enone, and the enantiomeric excess are measured, and from these results, the catalytic activity of the rare earth alkoxide is evaluated.

专利号:US-2015059818-A1
优先权日:2013-08-29
标题 :METHOD OF PRODUCING FILM OF SURFACE Nb-CONTAINING La-STO CUBIC CRYSTAL PARTICLES
发明人：KOUMOTO KUNIHITO; DANG FENG; PARK NAM-HEE; WAN CHUNLEI; TSURUTA KAZUKI
权利人:UNIV NAGOYA NAT UNIV CORP
摘要:There are provided a film of surface Nb-containing La-STO cubic crystal particles that is effective as, for example, a thermoelectric conversion material for use at low temperatures of around room temperature, and an art for producing this film. The production method includes preparing a mixed aqueous solution in which an La-containing compound, an Sr-containing compound, a six-fold coordinated Ti complex compound, and an amphiphilic compound are dissolved; growing cubic-form crystals formed of La-doped STO in the mixed aqueous solution by a hydrothermal synthesis method; obtaining surface Nb-containing La-STO cubic crystal particles by dissolving a niobium-containing compound in this mixed solution and heating; and forming a particle film in which the surface Nb-containing La-STO cubic crystal particles are bonded, by disposing the surface Nb-containing La-STO cubic crystal particles on a substrate and carrying out firing.

专利号:US-6201123-B1
优先权日:1998-07-08
标 题 :Catalyst composition, catalyst solution and process for preparing optically active epoxide
发明人：DAIKAI KAZUHIRO; KAMAURA MASAHIRO; HANAMOTO TAKESHI; INANAGA JUNJI
权利人:TOSOH CORP
摘要:A catalyst composition for organic a symmetric synthesis is provided, which comprises: n (A) a lanthanoid element ion; n (B) a binaphthol, and n (C) a nitrogen and/or phosphorus compound such as lutidine-N-oxide, 1,3-dimethyl-2-imidazolldinone, hexamethyl-phosphortriamide, triphenylphosphine oxide, tri(2-methylphenyl)phosphine oxide or tri(4-methylphenyl )phosphine oxide. Asymmetric epoxidation of an enone is conducted by allowing an enone to react with an oxidizing agent in the presence of the catalyst composition or a catalyst solution containing the catalyst composition.