Process for preparing 4-penten-2-ynal

    公开(公告)号:US11097999B2

    公开(公告)日:2021-08-24

    申请号:US17010236

    申请日:2020-09-02

    IPC分类号: C07C45/42 C07C47/20

    摘要: A process for preparing 4-penten-2-ynal of the following formula (2): CH2═CHC≡CCHO  (2) the process comprising a step of hydrolyzing a 5,5-dialkoxy-1-penten-3-yne compound of the following general formula (1): CH2═CHC≡CCH(OR1)(OR2)  (1) wherein R1 and R2 represent, independently of each other, a monovalent hydrocarbon group having 1 to 15 carbon atoms, preferably 1 to 8, more preferably 1 to 4, or R1 and R2 may be bonded to each other to form a divalent hydrocarbon group, R1-R2, having from 2 to 10 carbon atoms, to obtain 4-penten-2-ynal (2).

    PROCESS FOR PREPARING AN ALKOXYMETHYL ALKYNYL ETHER COMPOUND HAVING A TERMINAL TRIPLE BOND

    公开(公告)号:US20210198172A1

    公开(公告)日:2021-07-01

    申请号:US17128306

    申请日:2020-12-21

    IPC分类号: C07C41/52 C07C41/22

    摘要: The present invention provides a process for preparing an alkoxymethyl alkynyl ether compound having a terminal triple bond of the following formula (4): H—C≡C(CH2)aOCH2OCH2R (4), wherein R represents a hydrogen atom, an n-alkyl group having 1 to 9 carbon atoms, or a phenyl group, and “a” represents an integer of 1 to 10, the method comprising subjecting an alkynol compound having a terminal triple bond of the following formula (1): H—C≡C(CH2)aOH (1), wherein “a” is as defined above, to an alkoxymethylation with a halomethyl alkyl ether compound of the following formula (3): RCH2OCH2X (3), wherein X represents a halogen atom, and R is as defined above, in the presence of a dialkylaniline compound of the following formula (2): [CH3(CH2)b][CH3(CH2)c]NC6H5 (2), wherein b and c represent, independently of each other, an integer of 0 to 9, to form the alkoxymethyl alkynyl ether compound (4) having a terminal triple bond.

    11-HALO-3-UNDECENE COMPOUND AND A PROCESS FOR PREPARING THE SAME AND A PROCESS FOR PREPARING 9-DODECENAL COMPOUND

    公开(公告)号:US20210009489A1

    公开(公告)日:2021-01-14

    申请号:US16922679

    申请日:2020-07-07

    IPC分类号: C07C17/275 A01N29/02

    摘要: The present invention provides a process for preparing an 11-halo-3-undecene compound (7) in which X1 represents a halogen atom, the process comprising a step of subjecting a nucleophilic reagent, 3-hexenyl compound (5): in which M2 represents Li or MgZ2, wherein Z2 represents a halogen atom or a 3-hexenyl group, to a coupling reaction with a 1-halo-5-halopentane compound (6) in which X3 and X4 may be same with or different from each other and represent a halogen atom, to produce the 11-halo-3-undecene compound (7). The present invention also provides a process for preparing a 9-dodecenal compound (4): the process comprising a step of subjecting a nucleophilic reagent, 8-undecenyl compound (1) in which M1 represents Li or MgZ1, wherein Z1 represents a halogen atom or an 8-undecenyl group, and an orthoformic ester compound (2) in which R may be same with or different from each other and represents an alkyl group having 1 to 6 carbon atoms, to a nucleophilic substitution reaction to produce a 1,1-dialkoxy-9-dodecene compound (3) in which R are as defined above; and hydrolyzing the 1,1-dialkoxy-9-dodecene compound (3) thus obtained to produce the 9-dodecenal compound (4).

    Process for preparing (E2,Z6)-2,6-nonadienal

    公开(公告)号:US10730817B2

    公开(公告)日:2020-08-04

    申请号:US16545875

    申请日:2019-08-20

    IPC分类号: C07C45/29 C07C47/21

    摘要: The object of the present invention is to provide an industrial and economical process for preparing (E2,Z6)-2,6-nonadienal of the following formula (4): The present invention provides a process for preparing (E2,Z6)-2,6-nonadienal (4), comprising at least steps of: subjecting (Z3,Z6)-3,6-nonadien-1-ol of the following formula (1): to oxidation with a sulfoxide compound of the following formula (2): CH3(R1)S═O  (2) in which R1 represents a monovalent hydrocarbon group having from 1 to 12 carbon atoms, in the presence of a sulfur trioxide complex and an amine compound of the following formula (3): N(R2)(R3)(R4)  (3) in which R2, R3, and R4 each independently represent a monovalent hydrocarbon group having from 1 to 12 carbon atoms, or R3 and R4 may be bonded to each other to form a divalent hydrocarbon group having from 3 to 12 carbon atoms, R3-R4, to form the aforesaid (E2,Z6)-2,6-nonadienal (4).

    PROCESS FOR PREPARING (E2)-CIS-6,7-EPOXY-2-NONENAL

    公开(公告)号:US20200062725A1

    公开(公告)日:2020-02-27

    申请号:US16545887

    申请日:2019-08-20

    IPC分类号: C07D301/14

    摘要: The object of the present invention is to provide an industrial and economical process for preparing (E2)-cis-6,7-epoxy-2-nonenal of the following formula (3): The present invention provides a process for preparing (E2)-cis-6,7-epoxy-2-nonenal (3), comprising at least steps of: subjecting (Z3,Z6)-3,6-nonadien-1-ol of the following formula (1) to oxidation: to form (E2,Z6)-2,6-nonadienal of the following formula (2); and epoxidizing the resulting (E2,Z6)-2,6-nonadienal to form the aforesaid (E2)-cis-6,7-epoxy-2-nonenal (3).

    Method for producing 2-isopropylidene-5-methyl-4-hexenyl butyrate
    58.
    发明授权
    Method for producing 2-isopropylidene-5-methyl-4-hexenyl butyrate 有权
    2-异亚丙基-5-甲基-4-己烯基丁酸酯的制备方法

    公开(公告)号:US09126920B2

    公开(公告)日:2015-09-08

    申请号:US14527239

    申请日:2014-10-29

    摘要: Provided is a simple and efficient method for producing 2-isopropylidene-5-methyl-4-hexenyl butyrate. More specifically, provided is a method for producing 2-isopropylidene-5-methyl-4-hexenyl butyrate, the method including the steps of: isomerizing 2-isopropenyl-5-methyl-4-hexenoic acid ester (1) into 2-isopropylidene-5-methyl-4-hexenoic acid ester (2), reducing thus formed 2-isopropylidene-5-methyl-4-hexenoic acid ester (2) into 2-isopropylidene-5-methyl-4-hexenol (3), and butyrylating thus formed 2-isopropylidene-5-methyl-4-hexenol (3) into 2-isopropylidene-5-methyl-4-hexenyl butyrate (4), wherein R represents a C1-10 hydrocarbon group.

    摘要翻译: 提供了生产2-异亚丙基-5-甲基-4-己烯基丁酸酯的简单有效的方法。 更具体地说,提供了2-异亚丙基-5-甲基-4-己烯基丁酸酯的制造方法,其特征在于,将2-异丙烯基-5-甲基-4-己烯酸酯(1)异构化成2-异丙叉 -5-甲基-4-己烯酸酯(2),将由此形成的2-异亚丙基-5-甲基-4-己烯酸酯(2)还原成2-异亚丙基-5-甲基-4-己烯醇(3),和 将由此形成的2-异亚丙基-5-甲基-4-己烯醇(3)丁酰化成2-异丙叉-5-甲基-4-己烯基丁酸酯(4),其中R表示C1-10烃基。

    METHOD FOR PRODUCING CHLOROHYDROCARBON HAVING CONJUGATED DOUBLE BONDS
    59.
    发明申请
    METHOD FOR PRODUCING CHLOROHYDROCARBON HAVING CONJUGATED DOUBLE BONDS 有权
    用于生产具有结合双重骨架的氯硅橡胶的方法

    公开(公告)号:US20140275657A1

    公开(公告)日:2014-09-18

    申请号:US14189373

    申请日:2014-02-25

    IPC分类号: C07C17/07

    CPC分类号: C07C17/07 C07C17/16 C07C21/04

    摘要: Provided is a method for producing a chlorohydrocarbon having conjugated double bonds by stereoselectively chlorinating an alcohol having conjugated double bonds. More specifically, provided is a method for producing a chlorohydrocarbon having conjugated double bonds, the method including a step of chlorinating an alcohol having conjugated double bonds with a chlorinating agent in a solvent in the presence of a base and in the absence of metal salt for chlorination of the alcohol, and the alcohol being represented by the formula (1): RCH═CHCH═CH—Z—OH  (1) wherein R represents a hydrogen atom or a linear, branched or cyclic C1-17 monovalent hydrocarbon group which may have at least one double bond or at least one triple bond; and Z represents a linear, branched or cyclic C1-17 divalent hydrocarbon group which may have at least one double bond or at least one triple bond.

    摘要翻译: 提供通过立体选择性氯化具有共轭双键的醇来制备具有共轭双键的氯代烃的方法。 更具体地说,提供了具有共轭双键的氯代烃的制造方法,其特征在于,在碱的存在下,在不存在金属盐的情况下,在溶剂中,用氯化剂将具有共轭双键的醇氯化, 醇的卤化,由式(1)表示的醇:RCH = CHCH = CH-Z-OH(1)其中R表示氢原子或直链,支链或环状的C 1-17单价烃基,其可以 具有至少一个双键或至少一个三键; Z表示可以具有至少一个双键或至少一个三键的直链,支链或环状的C1-17二价烃基。