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121902-84-9

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121902-84-9 Usage

General Description

(R)-1,2-BIS(DIPHENYLPHOSPHINO)CYCLOHEXYLETHANE, also known as DCPPE, is a chiral diphosphine ligand widely used in asymmetric catalysis. It is a white to off-white solid with a molecular formula of C34H34P2 and a molecular weight of 510.61 g/mol. DCPPE has a chelating structure due to its two phosphine groups connected to a cyclohexyl backbone, which provides steric and electronic properties that are useful in various catalytic reactions. It is commonly used in organic synthesis to facilitate asymmetric hydrogenation reactions and other catalytic processes, making it an important tool in the production of pharmaceuticals and fine chemicals.

Check Digit Verification of cas no

The CAS Registry Mumber 121902-84-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,9,0 and 2 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 121902-84:
(8*1)+(7*2)+(6*1)+(5*9)+(4*0)+(3*2)+(2*8)+(1*4)=99
99 % 10 = 9
So 121902-84-9 is a valid CAS Registry Number.

121902-84-9SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name (1-Ethyl-1,2-cyclohexanediyl)bis(diphenylphosphine)

1.2 Other means of identification

Product number -
Other names -

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:121902-84-9 SDS

121902-84-9Downstream Products

121902-84-9Relevant articles and documents

1,2-Bis(diphenylphosphino)-1-cyclohexylethane. A New Chiral Phosphine Ligand for Catalytic Chiral Hydrogenations

Riley, Dennis P.,Shumate, Robert E.

, p. 5187 - 5193 (1980)

The new chiral bidentate phosphine ligand (R)-1,2-bis(diphenylphosphino)-1-cyclohexylethane ((R)-Cycphos) has been prepared.The rhodium(I) cationic complex of this phosphine serves as an effective homogeneous asymmetric hydrogenation catalyst for the reduction of (Z)-α-amidoacrylic acids at ambient temperature and pressure.Optical yields for the corresponding (S)-α-amino acid derivatives that are produced are generally above 90percent.The success of this ligand in giving higher optical yields than those obtained from other structurally analogous phosphines is rationalized in terms of the bulky cyclohexyl substituent affording a more stereochemically rigid chelating phosphine.

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