2,3-Dimethyl-2-pentenoic Acid | 122630-51-7

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: 2,3-Dimethyl-2-pentenoic Acid
• 英文别名: 2,3-dimethylpent-2-enoic acid
• CAS: 122630-51-7
• 化学式: C₇H₁₂O₂
• mdl: MFCD19228983
• 分子量: 128.171
• InChiKey: URRYFCLLPGIYQS-UHFFFAOYSA-N

物化性质

• 沸点：
  116 °C(Press: 15 Torr)
• 密度：
  0.97497 g/cm3(Temp: 17.5 °C)
• 稳定性/保质期：
  存在于烟气中。

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  9
• 可旋转键数：
  2
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.571
• 拓扑面积：
  37.3
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2,3-Dimethyl-2-pentenoic Acid 在 硫酸 、 氧气 、 三苯基膦 作用下， 以 氯仿 为溶剂， 反应 72.0h， 生成 4-Ethyl-4-methyl-3-methylene-1-oxetan-2-one
  参考文献：
  名称：

  Synthesis of .alpha.-methylene .beta.-lactones, novel heterocycles

  摘要：

  Triphenylphosphine deoxygenation of beta-alkyl, beta,beta-dialkyl-, and beta,beta-spirocycloalkyl-substituted alpha-methylene-beta-peroxy lactones 3a-k, which are readily available by photooxygenation of the corresponding alpha,beta-unsaturated carboxylic acids 1, and cyclization of the resulting alpha-methylene-beta-hydroperoxy acids 2 constitute a convenient method for the preparation of a variety of alpha-methylene beta-lactones 5. Alternatively, the alpha-methylene-beta-hydroxy carboxylic acids 4 can be directly cyclized by benzenesulfonyl chloride in pyridine into these novel four-membered ring heterocycles 5.

  DOI：

  10.1021/jo00020a016
• 作为产物：
  描述：

  2,3-Dimethyl-2-pentensaeure-ethylester 在 水 、 lithium hydroxide 作用下， 以 四氢呋喃 、 乙醇 为溶剂， 生成 2,3-Dimethyl-2-pentenoic Acid
  参考文献：
  名称：

  铑催化酰胺引导的无环四取代烯烃的高对映选择性硼氢化反应

  摘要：

  尽管过去几十年来，二取代和三取代烯烃的对映选择性硼氢化反应取得了进展，但自 20 世纪 50 年代以来，具有高非对映和对映选择性的四取代烯烃的对映选择性硼氢化反应，由于其极低的反应活性和同时控制的困难，仍然是一个未解决的挑战。四取代烯烃的区域选择性和立体选择性。在这里，我们报道了多种无环四取代烯烃的高度区域选择性、非对映选择性和对映选择性催化硼氢化反应。富电子铑配合物和配位辅助之间的微妙相互作用形成了一种高度适应性的催化剂，可以有效克服低反应性并控制立体选择性。该催化剂体系的通用性体现在其对具有不同空间和电子性质的各种四取代烯烃的功效。

  DOI：

  10.1021/jacs.4c04108

文献信息

• [EN] METHOD FOR PREPARING ORGANIC PEROXIDES ON SITE<br/>[FR] METHODE DE PREPARATION DE PEROXYDES ORGANIQUES SUR PLACE
  申请人：AKZO NOBEL NV

  公开号：WO2005075419A1

  公开（公告）日：2005-08-18

  The present invention relates to a process for preparing an organic peroxide and the subsequent use thereof in a (co)polymerization reaction, wherein the process comprises the steps (a), b1 (or b2), (c), (d), and (e), said steps being: (a) the reaction of chlorine with carbon monoxide, (b1) the reaction of phosgene formed in step (a) with one or more alcohols in order to prepare chloroformate, (b2) the reaction of phosgene formed in step (a) with one or more organic acids to prepare acid chloride, optionally in the presence of a catalyst suitable to effect the reaction of phosgene with said one or more organic acids, (c) the reaction of chloroformate, acid chloride, or mixture thereof with (in)organic hydroperoxide and base in an aqueous environment, (d) the transfer of organic peroxide formed in step (c) to a polymerization vessel, and (e) the (co)polymerization of monomer in the polymerization vessel in the presence of one or more organic peroxides transferred in step (d), wherein all of steps (a)-(e) are conducted at one site.

  本发明涉及一种用于制备有机过氧化物并在随后的(共)聚合反应中使用该过氧化物的方法，其中所述过程包括步骤(a)，b1(或b2)，(c)，(d)和(e)，这些步骤为：(a)氯与一氧化碳的反应，(b1)将步骤(a)中形成的光气与一种或多种醇反应以制备氯甲酸甲酯，(b2)将步骤(a)中形成的光气与一种或多种有机酸反应以制备酰氯，可选地在存在适合促进光气与所述一种或多种有机酸反应的催化剂的情况下进行，(c)将氯甲酸甲酯、酰氯或其混合物与(无机)有机过氧化氢和碱在水环境中反应，(d)将步骤(c)中形成的有机过氧化物转移到聚合釜中，以及(e)在聚合釜中，在步骤(d)转移的一种或多种有机过氧化物存在下，对单体进行(共)聚合，其中步骤(a)-(e)都在同一地点进行。
• Method for producing anellated tetrahydro-{1h}-triazoles
  申请人：——

  公开号：US20040097728A1

  公开（公告）日：2004-05-20

  The present invention relates to a process for preparing fused tetrahydro-[ 1 H]-triazoles of the formula I 1 where the variables R a , Z, Z 1 , X, W, n and Q are as defined in claim 1, by cyclization of compounds of the formula II 2 where R is C(X)OR 2 or C(X)SR 2 , where X is oxygen or sulfur, and R 2 is as defined in claim 1, in the presence of a base. The invention also relates to compounds of the formula I where W is sulfur if Z is a methylene group optionally substituted by R a , and furthermore to compounds of the formula I where Q is a benzoxazole or benzothiazole radical, and to the use of these compounds as herbicides.

  本发明涉及一种制备公式I的熔融四氢咪唑的方法，其中变量Ra、Z、Z1、X、W、n和Q如权利要求1中定义，通过在碱存在下，将公式II的化合物环化得到，其中R为C(X)OR2或C(X)SR2，其中X为氧或硫，R2如权利要求1中定义。该发明还涉及公式I的化合物，其中如果Z是可选地由Ra取代的亚甲基基团，则W为硫，此外还涉及公式I的化合物，其中Q为苯并噁唑或苯并噻唑基团，并将这些化合物用作除草剂。
• [EN] METHOD OF PRODUCING CHIRAL N-SUBSTITUTED ALLYLIC AMINE COMPOUNDS<br/>[FR] PROCÉDÉ DE PRODUCTION DE COMPOSÉS CHIRAUX D'AMINES ALLYLIQUES N-SUBSTITUÉES
  申请人：UNIV LOUISIANA AT LAFAYETTE

  公开号：WO2014025927A1

  公开（公告）日：2014-02-13

  The method relates to the field of asymmetric allylic amination and comprises preparing a chiral N-substituted allylic amine compound from the corresponding allylic substrates and substituted hydroxylamines, in the presence of a catalyst, said catalyst comprising copper compounds and a chiral ligand. Examples of chiral amine compounds which can be made using the method include Vigabatrin, Ezetimibe Terbinafme, Naftifme 3-methylmorphine, Sertraline, Cinacalcet, Mefloquine hydrochloride, and Rivastigmine. There are over 20,000 known bioactive molecules with chiral N-substituted allylic amine substructure. The method may also be used to produce non-natural chiral B-aminoacid esters, a sub-class of chiral N-substituted allylic amine compounds. Examples of B-aminoacid ester which can be produced by the disclosed method, include, but are not limited to, N-(2-methylpent-l-en-3-yl)benzenamine and Ethyl 2-methylene-3-(phenylamino)butanoate. Further, the products of the method described herein can be used to produce chiral heterocycles and bioactive molecules or materials.

  该方法涉及不对称烯丙基胺化领域，包括在催化剂的存在下，从相应的烯丙基底物和取代的羟胺制备手性N-取代烯丙基胺化合物，所述催化剂包括铜化合物和手性配体。使用该方法可以制备的手性胺化合物的示例包括维加巴林、依泽替米贝、特比那芬、那非那芬、3-甲基吗啡、舍曲林、西那卡塞、盐酸美氟喹和利伐司特。已知具有手性N-取代烯丙基胺亚结构的生物活性分子超过20,000种。该方法还可用于生产非天然手性B-氨基酸酯，这是手性N-取代烯丙基胺化合物的一个亚类。通过所披露的方法可以生产的B-氨基酸酯的示例包括N-(2-甲基戊-1-烯-3-基)苯胺和乙酸乙酯2-亚甲基-3-(苯氨基)丁酸酯。此外，所述方法的产物可用于生产手性杂环化合物和生物活性分子或材料。
• Process for Preparing an Overbased Detergent
  申请人：Kocsis A. Jody

  公开号：US20060178278A1

  公开（公告）日：2006-08-10

  The invention relates to a process for preparing an overbased metal detergent in an oil medium comprising the steps of: (1) providing a metal salt selected from the group consisting of a hydrocarbyl-substituted organic acid; a hydrocarbyl-substituted phenol, a phenate, a hydrocarbyl-substituted carboxylate and mixtures thereof; (2) further providing methanol and a mixture of alcohols containing 2 to about 7 carbon atoms, wherein the mole ratio of methanol to the mixture of alcohols is about 2.2 or less, to form a mixture; (3) further providing a basic metal compound; (4) reacting the mixture of step (3) with carbon dioxide to form a carbonated overbased metal sulphonate; (5) performing steps (3) and (4) at least three additional times upon the product of step (4); (6) thereafter removing at least a portion of the water produced in steps (1)-(5) and of the alcohols introduced in step (2); (7) performing step (2) again, upon the product of step (6); (8) performing steps (3) and (4) at least two additional times upon the product of step (7); and (9) thereafter removing a substantial portion of the water and of the alcohols from the composition; wherein the oil medium is present in an amount such that the weight ratio of the acid corresponding to the metal salt of (1) to the oil medium is 0.3 to 1.4; and wherein step (6) is required when the hydrocarbyl-substituted organic acid is a hydrocarbyl-substituted sulphonic acid. The invention further relates to its use in internal combustion engines.

  该发明涉及一种在油介质中制备过基金属清洁剂的方法，包括以下步骤：（1）提供一种选自羟烃基取代有机酸、羟烃基取代酚、酚酸盐、羟烃基取代羧酸盐及其混合物的金属盐；（2）进一步提供甲醇和含有2至约7个碳原子的醇混合物，其中甲醇与醇混合物的摩尔比约为2.2或更低，形成混合物；（3）进一步提供一种碱性金属化合物；（4）将步骤（3）的混合物与二氧化碳反应，形成碳酸盐过基金属磺酸盐；（5）对步骤（4）的产物至少进行三次以上的步骤（3）和（4）；（6）随后至少去除步骤（1）至（5）中产生的部分水和步骤（2）中引入的醇；（7）对步骤（6）的产物再次执行步骤（2）；（8）对步骤（7）的产物至少进行两次以上的步骤（3）和（4）；（9）随后从组合物中去除大部分水和醇；其中油介质的量使得步骤（1）中金属盐对应的酸与油介质的重量比为0.3至1.4；当羟烃基取代有机酸为羟烃基取代磺酸时，需要步骤（6）。该发明还涉及该方法在内燃机中的应用。
• Process for preparing peroxides using mixed anhydrides
  申请人：——

  公开号：US20040049070A1

  公开（公告）日：2004-03-11

  The invention relates to a process for the preparation of a peracid, perester or diacylperoxide and is characterized in that a mixed anhydride of formula R 1 [C(O)OC(O)OR 2 ] n or [R 3 C(O)OC(O)O] p R 4 is contacted with a hydroperoxide of formula R 5 [OOH] m in the presence of a base, wherein R 1 represents a mono-, di-, tri- or tetravalent C 1 -C 19 hydrocarbon group, optionally containing one or more hetero atoms, n is 1-4, R 2 represents a C 1 -C 20 hydrocarbon group, optionally containing one or more hetero atoms, R 3 represents a C 1 -C 19 hydrocarbon group, optionally containing one or more hetero atoms, R 4 represents a di-, tri- or tetravalent C 1 -C 20 hydrocarbon group, optionally containing one or more hetero atoms, p is 2-4, R 5 represents hydrogen or a mono- or divalent C 3 -C 18 tertiary alkyl or C 2 -C 20 acyl group, in which the tertiary alkyl or acyl group may optionally contain one or more hetero atoms, m is 1 or 2, and if R 5 represents hydrogen, m is 1, provided that if the hydroperoxide is an &agr;,&agr;′-dihydroperoxyperoxide, the reaction is not carried out in an inert two-phase solvent system comprising a polar solvent and an apolar solvent. The invention also relates to a hydroxyperacid, hydroxyperester, and hydroxydiacylperoxide obtainable by said process and the use of said hydroxyperoxides.

  本发明涉及一种制备过酸、过酯或双酰过氧化物的方法，其特征在于将式R1[C(O)OC(O)OR2]n或[R3C(O)OC(O)O]pR4的混合酸酐与式R5[OOH]的过氧化氢在碱的存在下接触，其中R1表示一个单、双、三或四价的C1-C19烃基，可选地含有一个或多个杂原子，n为1-4，R2表示一个C1-C20烃基，可选地含有一个或多个杂原子，R3表示一个C1-C19烃基，可选地含有一个或多个杂原子，R4表示一个双、三或四价的C1-C20烃基，可选地含有一个或多个杂原子，p为2-4，R5表示氢或一个单价或双价的C3-C18三级烷基或C2-C20酰基，其中该三级烷基或酰基可选地含有一个或多个杂原子，m为1或2，如果R5表示氢，则m为1，但如果过氧化氢是α，α'-二过氧基过氧化物，则不在惰性双相溶剂系统中进行反应，该系统包括一个极性溶剂和一个非极性溶剂。本发明还涉及通过该方法获得的羟基过酸、羟基过酯和羟基双酰过氧化物以及所述羟基过氧化物的用途。