CAS: 865-31-6; Aluminium Methanolate

上下游产品

cyclotriboric acid trimethyl ester triethylaluminum tetrahydrofuran lithium aluminium tetrahydridePhenylketendimethylacetal-2-d

专利信息

专利号:WO-2004047990-A1
优先权日:2002-11-27
标题:Catalyst for the preparation of carboxylic esters and process for the preparation of carboxylic esters with the same
发明人：WATANABE YOSHIHIRO; KURODA YASUSHI
权利人:SHOWA DENKO KK; WATANABE YOSHIHIRO; KURODA YASUSHI
摘要:The invention provides a catalyst for the synthesis of carboxylic esters from aldehydes through Tishchenko reaction or the like which can dispense with a special cooling unit, permits the synthesis at temperatures above ordinary temperature, and exhibits high selectivity and a long lifetime. A catalyst for the preparation of carboxylic esters by dimerization of aldehydes, which consists of an aluminum alkoxide and at least one compound selected from among sulfonic acids and salts thereof with Groups 4 to 14 metals of the periodic table; preparation of carboxylic esters by dimerization of aldehydes with the catalyst; and a process for the preparation of carboxylic esters, in which the synthesis is conducted at a reaction temperature controlled within the range of 30 to 100°C.

专利号:US-2024425890-A1
优先权日:2022-02-11
标 题:Process for the synthesis of alpha-methylene-gamma-butyrolactone
发明人：TADEN ANDREAS; BECK HORST; MYRTOLLARI KAMELA; KOURIST ROBERT; NIGL ANDREA
权利人:HENKEL AG & CO KGAA
摘要:The present application provides a process for the preparation of α-methylene-γ-butyrolactone, said process comprising the steps of:a) acetylating the C1-hydroxyl group of isoprenol to yield isoprenyl acetate;b) forming 4-acetoxy-2-methylene-butan-1-ol from said isoprenyl acetate by whole cell biotransformation, said step comprising:i) contacting a cell (CB) with a culture medium containing said isoprenyl acetate or with a culture medium contiguous with an organic phase containing said isoprenyl acetate under conditions that enable the cell to form 4-acetoxy-2-methylene-butan-1-ol from isoprenyl acetate; and,ii) optionally isolating the resultant 4-acetoxy-2-methylene-butan-1-ol, wherein said cell (CB) exhibits activity of at least one alkane monooxygenase enzyme which catalyzes the formation of 4-acetoxy-2-methylene-butan-1-ol from isoprenyl acetate;c) oxidizing said 4-acetoxy-2-methylene-butan-1-ol to yield 4-acetoxy-2-methylene butyric acid; and,d) converting said 4-acetoxy-2-methylene butyric acid to α-methylene-γ-butyrolactone by hydroxylysis to γ-hydroxy-α-methylenebutyric acid and subsequent cyclization of said γ-hydroxy-α-methylenebutyric acid.

专利号:US-11753417-B2
优先权日:2019-01-17
标 题 :Synthesis of 14-methyl-16-oxabicyclo[10.3.1]hexadec-12-ene
发明人：GARA MOHAMAD; BECKER YIGAL
权利人:INT FLAVORS & FRAGRANCES INC
摘要:Disclosed is a scalable process for preparation of 14-methyl-16-oxabicyclo[10.3.1]hexadec-12-ene (BCE), a key intermediate for manufacture of fragrance ingredient 3-methylcyclopentadecenone (MUSCENONE®) and analogs through reaction of 3-Methyl-1,5-cyclopentadecanedione (MCPD) and analogs with a metal or metalloid alkoxide in high yield and purity.

专利号:US-2009131714-A1
优先权日:2005-06-08
标题:Synthesis of betulonic and betulinic aldehydes
发明人：KRASUTSKY PAVEL A; MUNSHI KALYAN
权利人:KRASUTSKY PAVEL A; MUNSHI KALYAN
摘要:The present invention provides for methods of selectively converting betulin to betulonic aldehyde. The present invention also provides for methods of selectively converting 3-substituted triterpen-28-ols to the corresponding 3-substituted triterpen-28-carboxaldehydes. Additionally, the present invention provides for methods of preparing betulonic aldehyde, betulonic acid, betulinic acid, and corresponding 3-substituted triterpenes.

专利号:US-8759584-B2
优先权日:2007-12-14
标 题 :Synthesis of biguanidines and triazines, and biguanidino-aluminium complexes as intermediates
发明人：FORD MARK JAMES
权利人:FORD MARK JAMES; BAYER CROPSCIENCE AG
摘要:Compounds of formula (I) or salts thereof, n nin which R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , X and Y are defined as in claim 1 , can be prepared by a process characterized in that a compound of the formula (II) or a salt thereof,n n nis reacted to a compound of the formula (III) or a salt thereof,n n nand an aluminium(III) source, optionally, in the presence of a protic additive or solvent selected from the group consisting of alcohols or amines.n n The compounds (I) are suitable to be used for the preparation of heterocyclic compounds corresponding to (I) where the group Al(X)(Y) is replaced with an optionally substituted carbon atom, or s-triazine derivatives thereof.

专利号:US-2019070597-A1
优先权日:2015-10-13
标题:Synthesis of plate-like sapo-34 crystals
发明人：FICKEL DUSTIN; KULKARNI NEETA
权利人:SABIC GLOBAL TECHNOLOGIES BV
摘要:Disclosed is a SAPO-34 molecular sieve having platelet morphology with the smallest dimension on the order of a few nanometers. Also disclosed are methods and systems of using said molecular sieve for catalyzing the reaction of alkyl halides to light olefins. These methods and systems have been shown to have maximum combined selectivity of ethylene and propylene of at least 90% or ranging from 90% to 98%.