CAS: 4316-73-8; Sodium 2-(Methylamino)Acetate

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专利信息

专利号:WO-9507882-A1
优先权日:1993-09-14
标 题:Synthesis of amido acids from carboxylic acid esters and amino acid salts
发明人：HEINZMAN STEPHEN WAYNE; DUPONT JEFFREY SCOTT
权利人:PROCTER & GAMBLE
摘要:Chemical synthesis of amido acids, and their conversion to amido acid phenyl ester sulfonates for use as bleach activators, starting from carboxylic acid esters and amino acid salts.

专利号:WO-2004031133-A1
优先权日:2002-10-04
标 题:Process for the synthesis of guanidine derivatives
发明人：EISENHUTH LUDWIG
权利人:FLEXSYS BV; EISENHUTH LUDWIG
摘要:The invention pertains to a process for the synthesis of guanidine derivatives of Formula (I) wherein X is selected from OH, OM wherein M is an alkali or earth alkali metal ion, and NR1R2 wherein R1 and R2 are independently H, C1-C6 alkyl, C2-C6 alkenyl, C3-C6 cycloalkyl, or C6-C10 aryl; which comprises a first step of reacting cyanogen chloride (N≡CCI) with NH3 in an organic solvent followed by a second step of reacting with an amine of Formula (II) wherein X has the previously given meaning, optionally followed by a step of converting a compound of Formula (I) into another compound of Formula (I).

专利号:US-2009325821-A1
优先权日:2006-10-10
标题 :In Situ Nucleic Acid Array Synthesis Compositions
发明人：LEPROUST ERIC; PECK BILL J; HUANG XIAOHUA C
权利人:LEPROUST ERIC; PECK BILL J; HUANG XIAOHUA C
摘要:In situ nucleic acid synthesis compositions are provided. The compositions include a solvent; and at least one of: a viscosity modifier; and a surface tension modifier. During use, the compositions further include one of a phosphoramidite and an activator. Also provide are methods of using the compositions, e.g., in the synthesis of nucleic acid arrays, and systems kits for practicing the methods.

专利号:WO-9507881-A1
优先权日:1993-09-14
标题:Synthesis of sarcosinate surfactants
发明人：HEINZMAN STEPHEN WAYNE; DUPONT JEFFREY SCOTT
权利人:PROCTER & GAMBLE
摘要:A method for preparing sarcosinate amido acids and salts thereof of formula (IA) wherein R is a C1 or higher hydrocarbyl substituent, and M is a cationic moiety selected from alkali metal salts and hydrogen, comprising the steps of (a) reacting under anhydrous conditions, in the presence of a base catalyst with basicity equal to or greater than alkoxide catalyst, a carboxylic acid ester of formula (II) with a sarcosine amino acid salt of structure (B) wherein R is as described before, R1 is a C¿1? or higher hydrocarbyl substituent, and M is an alkali metal salt; and (b) optionally, neutralizing the sarcosinate amido acid salt formed by step (a) to form the sarcosinate amido acid, whereby M is hydrogen in formula (IA).

专利号:US-6632950-B2
优先权日:2000-07-06
标 题:Process for the preparation of derivatives of 4-amino-3-hydroxypyrrole-2-carboxylic acid
发明人：PHILLION DENNIS P; SINGH MEGH
权利人:PHARMACIA CORP
摘要:Novel processes and intermediates are provided for the synthesis of derivatives of 4-amino-3-hydroxypyrrole-2-carboxylic acids that are useful as monomers for polyamides capable of binding dsDNA. According to one preferred reaction scheme, an alkyl alkoxymethylene nitroacetate (Formula VIII) is prepared by reaction of a trialkyl orthoformate or orthoacetate with a nitroacetate ester in the presence of a carboxylic anhydride. The compound of Formula VIII is condensed with an N-substituted glycine to yield an N-substituted (2-nitro-2-alkoxycarbonyl)vinyl glycinate ester (Formula VII). Ring closure in the presence of an alkali metal alkoxide yields a 4-nitro-3-hydroxypyrrole-2-carboxylic ester (Formula V). After blocking of the 3-hydroxy group to produce a further intermediate (Formula IV), the 4-nitro group is reduced to a 4-amino group (Formula III), and the 4-amino group is then blocked by reaction with a dicarbonate diester to produce the fully blocked intermediate (Formula II). Saponification of the 2-carboxylic acid ester yields a monomer having a free 2-carboxylic ester moiety (Formula I).

专利号:US-5756606-A
优先权日:1997-05-22
标题:Means to control particle size and eliminate fouling in the synthesis of syndiotactic 1,2 - polybutadiene
发明人：WONG TANG HONG
权利人:GOODYEAR TIRE & RUBBER
摘要:Syndiotactic 1,2-polybutadiene is a thermoplastic resin which has double bonds attached in an alternating fashion to its polymeric backbone. Films, fibers and molded articles can be made utilizing syndiotactic 1,2-polybutadiene. It can also be blended into rubbers and cocured therewith. It is generally preferred to synthesize syndiotactic 1,2-polybutadiene in an aqueous medium by suspension or emulsion polymerization. In such aqueous polymerization techniques reactor fouling and particle size control problems are frequently encountered. This invention is based upon the unexpected finding that reactor fouling can be greatly reduced or eliminated and that particle size can be regulated by conducting such aqueous polymerizations in the presence of a controlled amount of dissolved oxygen which is within the range of about 0.01 ppm to about 4 ppm. This invention more specifically discloses a process for preparing syndiotactic 1,2-polybutadiene in an aqueous medium with minimal reactor fouling which comprises polymerizing 1,3-butadiene monomer in the aqueous medium in the presence of (1) a catalyst system which is comprised of (a) transition metal compound, (b) an organoaluminum compound and (c) at least one member selected from the group consisting of carbon disulfide, phenyl isothiocyanate and xanthic acid and (2) from about 0.01 ppm to about 4 ppm of oxygen.\\!