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    • 6. 发明公开
    • 키랄 3,4-디하이드록시부티르산의 제조방법
    • 生产3,4代二氢吡啶酸的方法
    • KR1020000033043A
    • 2000-06-15
    • KR1019980049703
    • 1998-11-19
    • 롯데정밀화학 주식회사
    • 변일석김영일류상욱하승범최윤환
    • C07C59/10
    • PURPOSE: A method for economically producing charily 3,4-dihydroxybutyric acid having an inverted charily center from charily 3-activated hydroxybutyrolactone is provided. CONSTITUTION: The method for producing charily 3,4-dihydroxybutyric acid comprises the steps: forming charily 4-hydroxy-3-activated hydroxybutyric acid of formula 3 by ring-opening reaction of charily 3-activated hydroxybutyrolactone of formula 2 in the presence of acid catalysts in water solvent; preparing charily 3,4-epoxybutyrate of formula 4 by inversion of a charily center in charily 4-hydroxy-3-activated hydroxybutyric acid in the presence of bases; producing charily 3,4-dihydroxybutyric acid of formula 1 by water substitution of charily 3,4-epoxybutyrate in the presence of acids.
    • 目的:提供一种从富含3-活化的羟基丁内酯经济地生产具有倒置的焦心中心的富含3,4-二羟基丁酸的方法。 构成:生产富含3,4-二羟基丁酸的方法包括以下步骤:通过在酸存在下,将式2的三元羧酸的3-活化羟基丁内酯的开环反应形成式3的4-羟基-3-活化的羟基丁酸 水溶剂中的催化剂; 通过在碱的存在下在富含4-羟基-3-活化的羟基丁酸中的一个富含中心的反应来制备式4的芳香的3,4-环氧丁酸酯; 通过在酸的存在下,用惰性3,4-环氧丁酸的水置换生成式1的芳香的3,4-二羟基丁酸。
    • 7. 发明授权
    • L-카르니틴 칼슘 염과 이의 제조방법
    • L-카르니틴칼슘염과이의제조방법
    • KR100461572B1
    • 2004-12-14
    • KR1019990010672
    • 1999-03-27
    • 롯데정밀화학 주식회사
    • 하승범변일석최윤환류상욱김경일
    • C07C229/00
    • PURPOSE: A calcium salt of L-carnitine is provided which can be used for a healthy food, a food additive, and medical supplies. CONSTITUTION: The calcium salt of L-carnitine (formula 1) is produced by a method comprising the steps of: concentrating L-carnitine and a calcium halide preferably calcium chloride in the equivalent ratio of 1-1.5:1 to obtain the L-carnitine and the calcium in the ratio of 1:1 or concentrating the L-carnitine and the calcium chloride in the equivalent ratio of 2-2.5:1 to obtain the L-carnitine and the calcium in the ratio of 2:1; adding an alcohol as a main solvent to the concentrated liquid; heating and then cooling and crystallizing the resultant. In the formula, X is a halogen, L is an integer of 1-4, n is 1 when m is 1, n is 2 when m is 0.
    • 目的:提供L-肉碱钙盐,可用于健康食品,食品添加剂和医疗用品。 构成:L-肉碱钙盐(式1)通过包括以下步骤的方法生产:以1-1.5:1的当量比浓缩L-肉毒碱和卤化钙,优选氯化钙,得到L-肉毒碱 与钙的比例为1:1,或者将L-肉碱和氯化钙以2-2.5:1的当量比进行浓缩,得到L-肉碱和钙的比例为2:1; 向浓缩液中加入醇作为主要溶剂; 加热,然后冷却并结晶所得物。 在该式中,X是卤素,L是1-4的整数,当m是1时n是1,当m是0时n是2。
    • 8. 发明公开
    • 키랄 3-히드록시-γ-부티로락톤의 제조방법
    • 3-羟基 - 吲哚的制备方法
    • KR1020000065995A
    • 2000-11-15
    • KR1019990012806
    • 1999-04-12
    • 롯데정밀화학 주식회사
    • 변일석김경일류상욱하승범최윤환
    • C07D307/32
    • PURPOSE: A process for producing 3-hydroxy-γ-butyrolactones by halogenating chiral 3,4-epoxybutyric acid or its salt using water in place of an expensive solvent and cyclization without any special purification processes in one reactor is provided which produces 3-hydroxy-γ-butyrolactones in high yield and any low cost. CONSTITUTION: Chiral 3,4-epoxybutyric acid or its salt of formula 2 is halogenated and cycled in the presence of a water solvent to give 3-hydroxy-γ-butyrolactones of formula 1. In the halogenation, a halogenating agent alone or a mixture of the halogenating agent and acid are used in which the halogenating agent is halogen acid selected from chloric acid, bromic acid, or halogenated alkali metal salt selected from sodium chloride, sodium bromide, sodium iodide, potassium chloride and potassium bromide. In formula, a chiral center (*) represents (R)- or (S)-; M is hydrogen ion, metal ion or organic amine; X is a halogen atom.
    • 目的:提供一种通过使用水代替昂贵的溶剂卤化手性3,4-环氧丁酸或其盐而生产3-羟基-γ-丁内酯的方法,并且在一个反应​​器中没有任何特殊的纯化方法进行环化,其产生3-羟基 γ-丁内酯,产率高,成本低。 构成:手性3,4-环氧丁酸或式2的盐在水溶剂存在下被卤化和循环,得到式1的3-羟基-γ-丁内酯。在卤化反应中,单独使用卤化剂或混合物 的卤化剂和酸,其中卤化剂为选自氯化钠,溴化钠,碘化钠,氯化钾和溴化钾的氯酸,溴酸或卤代碱金属盐中的卤素酸。 在式中,手性中心(*)表示(R) - 或(S) - ; M是氢离子,金属离子或有机胺; X是卤原子。
    • 9. 发明公开
    • (R)-3,4-에폭시-1-부탄올의 제조방법
    • 制备(R)-3,4-环氧-1-丁醇的方法
    • KR1020030089948A
    • 2003-11-28
    • KR1020020027877
    • 2002-05-20
    • 롯데정밀화학 주식회사
    • 천종필황재광하승범조익행유지욱
    • C07D303/14
    • C07D301/02
    • PURPOSE: A process for preparing (R)-3,4-epoxy-1-butanol is provided, thereby cheaply preparing (R)-3,4-epoxy-1-butanol in higher yield. CONSTITUTION: A process for preparing (R)-3,4-epoxy-1-butanol represented by the formula 1 comprises the steps of: reduction of (S)-3-alkyl or arylsulfonyloxy-butyrolactone of the formula 2 to prepare 2-sulfonyloxy-1,4-butanediol of the formula 3; and epoxidation of the compound of the formula 3 in the presence of base, wherein R is C1-C12 alkyl, aryl or substituted aryl; the reduction is carried out by using a boron metal compound as a reducing agent; the boron metal compound is selected from NaBH4 and Ca(BH4)2; the reduction temperature is -10 to 40 deg. C; and the epoxidation temperature is 0 to 50 deg. C.
    • 目的:提供(R)-3,4-环氧-1-丁醇的制备方法,从而以更高的收率廉价地制备(R)-3,4-环氧-1-丁醇。 构成:制备式(1)所示的(R)-3,4-环氧-1-丁醇的方法包括以下步骤:还原式2的(S)-3-烷基或芳基磺酰氧基 - 丁内酯以制备2- 式3的磺酰氧基-1,4-丁二醇; 在碱的存在下环氧化式3的化合物,其中R是C1-C12烷基,芳基或取代的芳基; 通过使用硼金属化合物作为还原剂进行还原; 硼化合物选自NaBH 4和Ca(BH 4)2; 还原温度为-10〜40℃。 C; 环氧化温度为0〜50℃。 C。