辛醇 、 7-辛烯醛 、 正己烷 在
hydrogen-carbon monoxide 、 7-辛烯醛 作用下,
反应 3.0h,
以346.8 millimoles of 1,9-nonanedial and 61.9 millimoles of 2-methyl-1,8-octanedial had been formed in the second hydroformylation reaction的产率得到nonanedial
Amino acid preparation method comprising a step of hydroformylation of an unsaturated fatty nitrile
申请人:ARKEMA FRANCE
公开号:US10125221B2
公开(公告)日:2018-11-13
A process for synthesizing an ω-amino acid compound of formula
HOOC—(CH2)r+2—CH2NH2,
wherein 4≤r≤13 from a monounsaturated fatty nitrile compound of formula
CH2═CH—(CH2)r—CN
the process comprising: 1) a step of hydroformylation of the mono unsaturated fatty nitrile compound by reacting said nitrile with carbon monoxide and di hydrogen 5e-a5 to obtain a nitrile aldehyde compound of formula HOC—(CH2)r+2-CN, then 2) a step of oxidation, in the presence of dioxygen, of the nitrile aldehyde compound to obtain a corresponding nitrile acid compound of formula HOOC—(CH2)r+2-CN, and 3) a step of reduction of the nitrile acid compound to give an w-amino acid of formula
HOOC—(CH2)r+2—CH2NH2.
Fluorinated Musk Fragrances: The CF<sub>2</sub>Group as a Conformational Bias Influencing the Odour of Civetone and (<i>R</i>)-Muscone
作者:Ricardo Callejo、Michael J. Corr、Mingyan Yang、Mingan Wang、David B. Cordes、Alexandra M. Z. Slawin、David O'Hagan
DOI:10.1002/chem.201600519
日期:2016.6.6
over edge locations in aliphatic macrocycles. In this study, the CF2 group has been introduced into musk relevant macrocyclic ketones. Nine civetone and five muscone analogues have been prepared by synthesis for structure and odour comparisons. X‐ray studies indeed show that the CF2 groups influence ring structure and they give some insight into the preferred ring conformations, triggering a musk odour
BIS(6-METHYL-3-SULPHOPHENYL)PHENYLPHOSPHINE, AMMONIUM SALT THEREOF, AND METHOD FOR PRODUCING SAME
申请人:HOKKO CHEMICAL INDUSTRY CO., LTD.
公开号:US20160052947A1
公开(公告)日:2016-02-25
Provided are a water-soluble triarylphosphine for a palladium catalyst, which has high selectivity in a telomerization reaction and can be recovered with efficiency, an ammonium salt thereof, and a method for efficiently producing the same. Specifically, provided are bis(6-methyl-3-sulphophenyl)phenylphosphine; a bis(6-methyl-3-sulphonatophenyl)phenylphosphine diammonium salt obtained by reacting the phosphine with a tertiary amine having a total of 3 to 27 carbon atoms in groups bonded to one nitrogen atom; and a method for producing the same.
Up the Hill: Selective Double-Bond Isomerization of Terminal 1,3-Dienes towards Z-1,3-Dienes or 2Z,4E-Dienes
作者:Florian Pünner、Anastasia Schmidt、Gerhard Hilt
DOI:10.1002/anie.201107512
日期:2012.1.27
different cobalt catalyst systems led to the selectiveisomerization of 1,3‐dienes. In the case of the [CoBr2(py‐imine)]‐catalyzed reaction, the Z‐1,3‐diene was formed in a highly selective manner (see scheme). When the catalyst precursor [CoBr2(dpppMe2)] was applied, a double‐bond migration and selectiveisomerizationtowards the 2Z,4E‐configured 2,4‐dienes were observed
METHOD FOR THE CONTROLLED HYDROFORMYLATION AND ISOMERIZATION OF A NITRILE/ESTER/OMEGA UNSATURATED FATTY ACID
申请人:ARKEMA FRANCE
公开号:US20160115120A1
公开(公告)日:2016-04-28
A method to synthesize a fatty nitrile/ester aldehyde comprising the following steps:
1) hydroformylation of a ω-unsaturated fatty nitrile/ester/acid substrate under particular conditions of partial pressure, temperature, reaction time, conversion rate of the ω-unsaturated fatty nitrile/ester/acid reactant, catalyst, [substrate]/[metal] molar ratio and [ligand]/[metal] molar ratio so as after the reaction to obtain:
a hydroformylation product comprising at least one fatty nitrile/ester/acid aldehyde of formula: OHC—(CH
2
)
r+2
—R, and
an isomerate comprising at least one fatty nitrile/ester/acid isomer with internal unsaturation in which at least 80% of the internal isomer(s) of the isomerate are formed of the ω-1 unsaturated isomer of formula CH
3
—CH═CH—(CH
2
)
r−1
—R; followed by:
2) separation and recovery of the fatty nitrile/ester/acid aldehyde and of the isomerate.
一种合成脂肪酸腈/酯醛的方法,包括以下步骤:
1)在特定的分压、温度、反应时间、ω-不饱和脂肪酸腈/酯/酸底物的转化率、催化剂、[底物]/[金属]摩尔比和[配体]/[金属]摩尔比条件下,对ω-不饱和脂肪酸腈/酯/酸底物进行氢甲酰化反应,以便在反应后获得:
a. 一个氢甲酰化产物,包括至少一种公式为 OHC—(CH2)r+2—R 的脂肪酸腈/酯/酸醛;和
b. 一个异构物,包括至少一种具有内部不饱和的脂肪酸腈/酯/酸异构体,其中至少80%的内部异构体是由公式为 CH3—CH═CH—(CH2)r−1—R 的ω-1不饱和异构体形成的;随后进行:
2)分离和回收脂肪酸腈/酯/酸醛和异构物。