METHOD FOR CONTINUOUSLY PRODUCING SUBSTITUTED OXAZOLE

    公开(公告)号:JP2003201283A

    公开(公告)日:2003-07-18

    申请号:JP2002227742

    申请日:2002-08-05

    Applicant: BASF AG

    Abstract: PROBLEM TO BE SOLVED: To provide a method for continuously producing a 5-alkoxy-substituted oxazole and a method for producing a pyridoxine derivative by using the same. SOLUTION: This method for obtaining a pyridoxine derivative is provided by converting an α-isocyanoalkanoic acid ester expressed by the formula II in the presence of continuously supplied base at ≥80°C temperature to a 5- alkoxy-substituted oxazole I, taking it out from a reactor at the same time with the reaction, performing a reaction of the compound I with a compound VI to make a compound VII, and acid-treating it to obtain a pyridoxine derivative IX (in formulae, R 1 is an alkyl, R 2 is H or an alkyl, R 3 , R 4 are each independently a protection group of hydroxy group). COPYRIGHT: (C)2003,JPO

    METHOD FOR PRODUCING SUBSTITUTED OXAZOLE
    4.
    发明专利

    公开(公告)号:JP2003176272A

    公开(公告)日:2003-06-24

    申请号:JP2002227292

    申请日:2002-08-05

    Applicant: BASF AG

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a 5-alkoxy-substituted oxazole and a method for producing a pyridoxine derivative. SOLUTION: The 5-alkoxy-substituted oxazole is obtained by converting an α-isocyano alkylic acid ester in the presence of a base at >80°C and separating the 5-alkoxy-substituted oxazole from the reaction mixture simultaneously with the converting reaction, and the pyridoxine derivative is obtained by converting an amino acid into an amino acid ester, converting the obtained into a formamido acid ester, converting the obtained into an α-isocyanoalkyl acid ester, converting the obtained into a 5-alkoxy-substituted oxazole in the presence of a base at >80°C and separating the 5-alkoxy-substituted oxazole from the reaction mixture simultaneously with the converting reaction, reacting the obtained 5-alkoxy-substituted oxazole with a protective diol to obtain an Diels-Alder adduct and treating the obtained with an acid and removing the protective group to convert into the pyridoxine derivative. COPYRIGHT: (C)2003,JPO

    COMB POLYMERS AND THEIR USE AS ADDITIVES FOR PREPARATIONS OF MINERAL BINDERS
    6.
    发明申请
    COMB POLYMERS AND THEIR USE AS ADDITIVES FOR PREPARATIONS OF MINERAL BINDERS 审中-公开
    CAMMPOLYMERS及其作为矿物粘合剂制备添加剂的用途

    公开(公告)号:WO2007051858A3

    公开(公告)日:2007-07-05

    申请号:PCT/EP2006068143

    申请日:2006-11-06

    Abstract: The invention relates to novel comb polymers supporting, on a carbon backbone, poly-C 2 -C 4 -alkylene ether side chains A and functional groups B, which exist in the form of anionic groups at a pH > 12, and to the salts of comb polymers of this type. The invention also relates to the use of these comb polymers as additives in preparations containing a mineral binder. The polyalkylene ether side chains A have the following formula *-U-(C(O)) k -X-(Alk-O) n -Y-Z A, wherein: * represents the binding site to the carbon backbone of the comb polymer; U represents a chemical bond or an alkylene group with 1 to 8 C atoms; X represents oxygen or a group NR; k represents 0 or 1; n represents an integer whose mean value, with regard to the comb polymer, ranges from 5 to 300; Alk represents C 2 -C 4 alkylene, Alk being able to be the same or different within the group (Alk-O) n ; Y represents a linear or branched alkylene group with 2 to 8 C atoms, which can support a phenyl ring; Z represents a 5- to 10-membered nitrogen heterocyclic compound that, as ring members, can comprises, in addition to the nitrogen atom and the carbon atoms, 1, 2 or 3 additional heteroatoms selected among oxygen, nitrogen and sulfur, the nitrogen ring members being able to contain a group R', and 1 or 2 carbon ring members can exist in the form of a carbonyl group; R represents hydrogen, C 1 -C 4 alkyl or Benzyl, and; R' represents hydrogen, C 1 -C 4 alkyl or Benzyl.

    Abstract translation: 本发明涉及新的梳型聚合物在聚-C 的碳骨架2 -C 4 亚烷基醚侧链A和官能团B,在pH> 12的形式的阴离子 这些梳形聚合物的存在,携带和盐。 本发明还涉及这些梳形聚合物在含有矿物粘合剂的制剂中作为添加剂的用途。 聚亚烷基醚侧链A具有下式:* -U-(C(O))ķ -X-(ALK-O)名词 -YZ A,其中 *表示结合位点的梳形聚合物的碳骨架,U为化学键或碳原子数为1〜8的亚烷基,X是氧或NR基团,k为0​​或1,n是一个整数,其平均值 Alk是C 2 -C 4亚烷基,其中Alk在(Alk-O)名词可以相同或不同,Y表示直链或碳原子数为2至8,其可具有苯基环支链亚烷基,Z为联5-至10-元含氮杂环中的氮,其 作为环成员,除了氮原子和除碳原子之外,1,2或3可以具有选自氧,氮和硫的另外的杂原子,其中氮环 ieder可具有的基团R”,并将其用于本作为羰基1名或2个碳环成员是可能的,R是氢,C 1 -C 4 是烷基或苄基,和R '是氢,C 1 -C 4烷基或苄基。

    7.
    发明专利
    未知

    公开(公告)号:DE102005053019A1

    公开(公告)日:2007-05-10

    申请号:DE102005053019

    申请日:2005-11-07

    Applicant: BASF AG

    Abstract: The present invention relates to novel comb polymers which bear poly-C2-C4-alkylene ether side chains A and functional groups B which at a pH of >12 are present in the form of anionic groups on a carbon backbone and also the salts of such comb polymers. The invention also relates to the use of these comb polymers as additives in preparations comprising a mineral binder. The polyalkylene ether side chains A have the following formula: *—U—(C(O))k—X-(Alk-O)n—Y—Z  A.

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