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Bis(4-methoxyphenyl)phosphine is an organic compound with the chemical formula C14H15O2P. It is a colorless to pale yellow liquid that is soluble in organic solvents. This phosphine compound is characterized by its two 4-methoxyphenyl groups attached to a central phosphorus atom. It is known for its reactivity and is commonly used as a ligand in various chemical reactions.

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  • 84127-04-8 Structure
  • Basic information

    1. Product Name: Bis(4-methoxyphenyl)phosphine
    2. Synonyms: Bis(4-methoxyphenyl)phosphine
    3. CAS NO:84127-04-8
    4. Molecular Formula: C14H15O2P
    5. Molecular Weight: 246
    6. EINECS: N/A
    7. Product Categories: N/A
    8. Mol File: 84127-04-8.mol
  • Chemical Properties

    1. Melting Point: 36-40°C
    2. Boiling Point: 352.4±42.0 °C(Predicted)
    3. Flash Point: >110℃
    4. Appearance: /
    5. Density: N/A
    6. Refractive Index: N/A
    7. Storage Temp.: N/A
    8. Solubility: N/A
    9. CAS DataBase Reference: Bis(4-methoxyphenyl)phosphine(CAS DataBase Reference)
    10. NIST Chemistry Reference: Bis(4-methoxyphenyl)phosphine(84127-04-8)
    11. EPA Substance Registry System: Bis(4-methoxyphenyl)phosphine(84127-04-8)
  • Safety Data

    1. Hazard Codes: F
    2. Statements: 11-36/37/38
    3. Safety Statements: 26-36
    4. RIDADR: 1325
    5. WGK Germany: 3
    6. RTECS:
    7. HazardClass: 4.1
    8. PackingGroup:
    9. Hazardous Substances Data: 84127-04-8(Hazardous Substances Data)

84127-04-8 Usage

Uses

Used in Enantioselective Ir-catalyzed hydrogenation:
Bis(4-methoxyphenyl)phosphine is used as a chiral ligand for enantioselective iridium-catalyzed hydrogenation reactions. Its unique steric and electronic properties enable the selective reduction of prochiral compounds, leading to the formation of enantiomerically pure products.
Used in Palladium-catalyzed asymmetric additions:
In palladium-catalyzed asymmetric additions, Bis(4-methoxyphenyl)phosphine serves as a chiral ligand to facilitate the enantioselective formation of carbon-carbon and carbon-heteroatom bonds. Its presence in the reaction system enhances the selectivity and yield of the desired chiral products.
Used in Alkali-metal-catalyzed addition reactions:
Bis(4-methoxyphenyl)phosphine is employed as a ligand in alkali-metal-catalyzed addition reactions. It helps to stabilize the metal center and provides a chiral environment for the reaction, promoting the formation of enantiomerically enriched products.
Used in Preparation of different DIOP-type ligands:
Bis(4-methoxyphenyl)phosphine is used as a precursor for the synthesis of various DIOP-type ligands. These ligands are versatile and can be employed in Rh-catalyzed asymmetric hydrogenation reactions, where they provide high enantioselectivity and reactivity for a wide range of substrates.

Check Digit Verification of cas no

The CAS Registry Mumber 84127-04-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,1,2 and 7 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 84127-04:
(7*8)+(6*4)+(5*1)+(4*2)+(3*7)+(2*0)+(1*4)=118
118 % 10 = 8
So 84127-04-8 is a valid CAS Registry Number.

84127-04-8 Well-known Company Product Price

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  • Aldrich

  • (710504)  Bis(4-methoxyphenyl)phosphine  

  • 84127-04-8

  • 710504-1G

  • 1,726.92CNY

  • Detail

84127-04-8SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name Bis(4-methoxyphenyl)phosphine

1.2 Other means of identification

Product number -
Other names bis(4-methoxyphenyl)phosphane

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:84127-04-8 SDS

84127-04-8Relevant articles and documents

Hydrogen/Halogen Exchange of Phosphines for the Rapid Formation of Cyclopolyphosphines

Barrett, Adam N.,Woof, Callum R.,Goult, Christopher A.,Gasperini, Danila,Mahon, Mary F.,Webster, Ruth L.

supporting information, p. 16826 - 16833 (2021/11/04)

The hydrogen/halogen exchange of phosphines has been exploited to establish a truly useable substrate scope and straightforward methodology for the formation of cyclopolyphosphines. Starting from a single dichlorophosphine, a sacrificial proton "donor phosphine"makes the rapid, mild synthesis of cyclopolyphosphines possible: reactions are complete within 10 min at room temperature. Novel (aryl)cyclopentaphosphines (ArP)5 have been formed in good conversion, with the crystal structures presented. The use of catalytic quantities of iron(III) acetylacetonate provides significant improvements in conversion in the context of diphosphine (Ar2P)2 and alkyl-substituted cyclotetra- or cyclopentaphosphine ((AlkylP)n, where n = 4 or 5) formation. Both iron-free and iron-mediated reactions show high levels of selectivity for one specific ring size. Finally, investigations into the reactivity of Fe(acac)3 suggest that the iron species is acting as a sink for the hydrochloric acid byproduct of the reaction.

Ru(II)-Catalyzed Amination of Aryl Fluorides via η6-Coordination

Kang, Qi-Kai,Li, Yuntong,Lin, Yunzhi,Shi, Hang

supporting information, p. 3706 - 3711 (2020/03/11)

We developed a Ru/hemilabile-ligand-catalyzed nucleophilic aromatic substitution (SNAr) of aryl fluorides as the limiting reagents. Significant ligand enhancement was demonstrated by the engagement of both electron-rich and neutral arenes in the SNAr amination without using excess arenes. Preliminary mechanistic studies revealed that the nucleophilic substitution proceeds on a η6-complex of the Ru catalyst and the substrate, and the hemilabile ligand facilitates dissociation of products from the metal center.

Copper-catalyzed C–P cross-coupling of secondary phosphines with (hetero)aromatic bromide

Li, Chun-Jing,Lü, Jing,Zhang, Zhi-Xun,Zhou, Kun,Li, Yan,Qi, Guang-Hui

, p. 4547 - 4562 (2018/04/20)

A novel and convenient approach to the synthesis of various tertiary phosphines via a copper-catalyzed cross-coupling of (hetero)aromatic bromide with secondary phosphines has been developed. The reaction employs cheap copper as the catalyst, 2,6-bis(N-methylaminomethyl)pyridine (L4) as a perfect ligand and KOtBu as a base; all reactions are carried out under argon atmosphere. A variety of sterically hindered and/or functionalized substrates were found to react under these reaction conditions to provide products in good to excellent yields. Moreover, ten new tertiary phosphines were first reported in this process.

Tailored Cobalt-Catalysts for Reductive Alkylation of Anilines with Carboxylic Acids under Mild Conditions

Liu, Weiping,Sahoo, Basudev,Spannenberg, Anke,Junge, Kathrin,Beller, Matthias

supporting information, p. 11673 - 11677 (2018/09/10)

The first cobalt-catalyzed hydrogenative N-methylation and alkylation of amines with readily available carboxylic acid feedstocks as alkylating agents and H2 as ideal reductant is described. Combination of tailor-made triphos ligands with cobalt(II) tetrafluoroborate significantly improved the efficiency, thus promoting the reaction under milder conditions. This novel protocol allows for a broad substrate scope with good functional group tolerance, even in the presence of reducible alkenes, esters, and amides.

Rapid Metal-Free Formation of Free Phosphines from Phosphine Oxides

Provis-Evans, Cei B.,Emanuelsson, Emma A. C.,Webster, Ruth L.

supporting information, p. 3999 - 4004 (2018/09/21)

A rapid method for the reduction of secondary phosphine oxides under mild conditions has been developed, allowing simple isolation of the corresponding free phosphines. The methodology involves the use of pinacol borane (HBpin) to effect the reduction while circumventing the formation of a phosphine borane adduct, as is usually the case with various other commonly used borane reducing agents such as borane tetrahydrofuran complex (BH3?THF) and borane dimethyl sulfide complex (BH3?SMe2). In addition, this methodology requires only a small excess of reducing agent and therefore compares favourably not just with other borane reductants that do not require a metal co-catalyst, but also with silane and aluminium based reagents. (Figure presented.).

Metal-Free Reduction of Phosphine Oxides, Sulfoxides, and N-Oxides with Hydrosilanes using a Borinic Acid Precatalyst

Chardon, Aurélien,Maubert, Orianne,Rouden, Jacques,Blanchet, Jér?me

, p. 4460 - 4464 (2017/11/22)

The general reduction of phosphine oxides, sulfoxides, and amine N-oxides was achieved by combining bis(2-chlorophenyl)borinic acid with phenylsilane. The reaction was shown to tolerate a wide range of substrates and could be performed under mild conditions, with only 2.5 mol % of the easily synthesized catalyst. Mechanistic investigations pointed to a key borohydride as the real catalyst and at bis(2-chlorophenyl)borinic acid as a precatalyst.

Facile, Catalytic Dehydrocoupling of Phosphines Using β-Diketiminate Iron(II) Complexes

King, Andrew K.,Buchard, Antoine,Mahon, Mary F.,Webster, Ruth L.

supporting information, p. 15960 - 15963 (2015/11/03)

Catalytic dehydrocoupling of primary and secondary phosphines has been achieved for the first time using an iron pre-catalyst. The reaction proceeds under mild reaction conditions and is successful with a range of diarylphosphines. A proton acceptor is not needed for the transformation to take place, but addition of 1-hexene does allow for turnover at 50°C. The catalytic system developed also facilitates the dehydrocoupling of phenylphosphane and dicyclohexylphosphane. A change in solvent switches off dehydrocoupling to allow hydrophosphination of alkenes.

Selective dehydrocoupling of phosphines by lithium chloride carbenoids

Molitor, Sebastian,Becker, Julia,Gessner, Viktoria H.

, p. 15517 - 15520 (2014/12/12)

The development of a simple, transition-metal-free approach for the formation of phosphorus-phosphorus bonds through dehydrocoupling of phosphines is presented. The reaction is mediated by electronically stabilized lithium chloride carbenoids and affords a variety of different diphosphines under mild reaction conditions. The developed protocol is simple and highly efficient and allows the isolation of novel functionalized diphosphines in high yields.

Catalyst-free alcoholysis of phosphane-boranes: a smooth, cheap, and efficient deprotection procedure

Van Overschelde, Michel,Vervecken, Elias,Modha, Sachin G.,Cogen, Simon,Van der Eycken, Erik,Van der Eycken, Johan

experimental part, p. 6410 - 6415 (2009/12/09)

Catalyst-free alcoholytic deprotection of borane-protected phosphorus compounds offers a smooth, efficient, and clean alternative to existing deprotection methods. In this paper we report our results on the general applicability of deprotecting phosphane-

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