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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 2734216Generated: October 23, 2026

2-(Dicyclohexylphosphino)biphenyl

Cy-John-Phos · CYCLOHEXYL JOHNPHOS · (2-biphenyl)dicyclohexylphosphine · dicyclohexyl-(2-phenylphenyl)phosphane · biphenyl-2-yldicyclohexylphosphine · 2-(Dicyclo · 98% CyJohnPhos · CyJohnPhos 97%

https://huagongshe.com/en/chemical/2734216

2-(Dicyclohexylphosphino)biphenyl molecular structure

Identifiers & Physical Properties

CAS No.247940-06-3
Molecular formulaC24H31P
Average molar mass350.5 g/mol
Monoisotopic mass350.21633799 g/mol
SMILESc1ccc(-c2ccccc2P(C2CCCCC2)C2CCCCC2)cc1
InChIKeyLCSNDSFWVKMJCT-UHFFFAOYSA-N
PubChem CID2734216
EC No.480-030-2
DTXSIDDTXSID60370170

Chemical & Physical Properties

XLogP6.7
Topological polar surface area0
Hydrogen bond donors0
Hydrogen bond acceptors0
Rotatable bonds4
Heavy atoms25
Formal charge0
Complexity356
Melting point102-106 °C(lit.)
Boiling point499.5±24.0 °C(Predicted)
Storage conditionsunder inert gas (nitrogen or Argon) at 2-8°C
Solubilitysoluble in Toluene
Physical statecrystal
Colorwhite
SensitivityAir Sensitive
BRN8440533
InChIInChI=1S/C24H31P/c1-4-12-20(13-5-1)23-18-10-11-19-24(23)25(21-14-6-2-7-15-21)22-16-8-3-9-17-22/h1,4-5,10-13,18-19,21-22H,2-3,6-9,14-17H2
InChIKeyLCSNDSFWVKMJCT-UHFFFAOYSA-N
SMILESP(C1=CC=CC=C1C1=CC=CC=C1)(C1CCCCC1)C1CCCCC1
CAS DataBase Reference247940-06-3(CAS DataBase Reference)
UNSPSC Code12352002
NACRESNA.22
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH413
GHS precautionary statementsP261-P280-P305+P351+P338-P304+P340-P405-P501A
Personal protective equipment (PPE)Eyeshields, Gloves, type N95 (US)
Hazard symbolsXn
Risk statements (R)36/37/38-22
Safety statements (S)36/37/39-26
Water hazard class (WGK)3
F10-13-23
TSCA inventory statusNo
Hazard classAIR SENSITIVEAquatic Chronic 4
Customs code29310099
Storage class11 - Combustible Solids
REACH registrationsInactive

Safety & Regulations

GHS classificationWarningH315 (13.3%): Causes skin irritation [Warning Skin corrosion/irritation]H319 (13.3%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]H335 (13.3%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposureRespiratory tract irritation]H413 (88.9%): May cause long lasting harmful effects to aquatic life [Hazardous to the aquatic environment, long-term hazard]P261, P264, P264+P265, P271, P273, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 45 reports by companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.
Regulatory informationStatus: Active Update: 07-03-2012 https://echa.europa.eu/registration-dossier/-/registered-dossier/2550
Hazard Classes and CategoriesSkin Irrit. 2 (13.3%)Eye Irrit. 2 (13.3%)STOT SE 3 (13.3%)Aquatic Chronic 4 (88.9%)Skin Irrit. 2 (100%)Eye Irrit. 2A (100%)STOT SE 3 (100%)Aquatic Chronic 4 (100%)
F10-13-23
Personal protective equipment (PPE)Eyeshields, Gloves, type N95 (US)
Water hazard class (WGK)3
TSCA inventory statusNo
Customs code29310099
Risk statements (R)36/37/38-22
Signal wordWarning
GHS pictogramGHS07
Hazard symbolsXn
Safety statements (S)36/37/39-26
Hazard classAIR SENSITIVEAquatic Chronic 4
Storage class11 - Combustible Solids
GHS hazard statementsH413
REACH registrationsInactive
GHS precautionary statementsP261-P280-P305+P351+P338-P304+P340-P405-P501A

Applications & Uses

Description

2-(Dicyclohexylphosphino)biphenyl is a ligand for the amination of triflates and aryl halides. Optimal ligand for a novel amination reaction (Buchwald reaction)(2) 2-(Dicyclohexylphosphino)biphenyl, a synthetic chemical compound, has found diverse applications in scientific research. Being a cyclic phosphonate derivative of cyclohexanol, this colourless, odourless, and tasteless solid holds a distinct appeal for laboratory use. In scientific research, 2-(Dicyclohexylphosphino)biphenyl has proven invaluable. It serves as an excellent model compound for delving into protein-ligand interactions, thus aiding in studying small molecule effects on protein folding. Moreover, researchers have utilized 2-(Dicyclohexylphosphino)biphenyl to gain insights into protein structures and unravel the mechanism of action behind various drugs. Additionally, the compound has been a vital tool in assessing how environmental factors influence protein structure and function. The interaction between 2-(Dicyclohexylphosphino)biphenyl and proteins primarily occurs through hydrogen bonding and hydrophobic interactions, resulting in high-affinity and specific protein binding.

Uses

Ligand employed in an extremely general method for the Pd-catalyzed synthesis of aromaticamines using aryl chlorides, bromides and triflates.

Uses

suzuki reaction

Uses

2-(Dicyclohexylphosphino)biphenyl is used as a catalyst for Suzuki coupling reactions.

General Description

CyJohnPhos [(2-Biphenyl)dicyclohexylphosphine] is an air-stable, bulky and electron-rich monodentate biarylphosphine ligand developed by the Buchwald group to enhance the reactivity of palladium catalysis during cross-coupling reactions.