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HomeProduct name list(-)-DIOP

(-)-DIOP

Synonym(s):(−)-1,4-Bis(diphenylphosphino)-1,4-dideoxy-2,3-O-isopropylidene-L-threitol;(R,R)-DIOP;(4R,5R)-4,5-Bis(diphenylphosphino-methyl)-2,2-dimethyl-1,3-dioxolane;(4R-trans)-[(2,2-Dimethyl-1,3-dioxolane-4,5-diyl)bis(methylene)]bis(diphenylphosphine)

  • CAS NO.:32305-98-9
  • Empirical Formula: C31H32O2P2
  • Molecular Weight: 498.54
  • MDL number: MFCD00014107
  • EINECS: 250-984-2
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2023-05-11 17:26:00
(-)-DIOP Structural

What is (-)-DIOP?

Chemical properties

white powder

The Uses of (-)-DIOP

For the in situ preparation of chiral hydrogenation catalysts.

General Description

(-)-2,3-O-Isopropylidene-2,3-dihydroxy-1,4-bis(diphenylphosphino)butane is a C2 chelating diphosphine ligand for transition metal complexes during asymmetric catalysis.

Purification Methods

It has been recrystallised from *C6H6/pet ether. After 2 recrystallisations from EtOH, it was pure by TLC on silica gel using Me2CO/hexane as solvent. [Kagan & Dang J Am Chem Soc 94 6429 1972.] Lanthanide shift reagents See in “Aliphatic Compounds”, Chapter 4, europium (III) acetate above and Eu(tmc)3 and Eu(tfc)3 below.

Properties of (-)-DIOP

Melting point: 88-90 °C(lit.)
Boiling point: 590.3±25.0 °C(Predicted)
alpha  -26° (c 2.0, CHCl3)
storage temp.  2-8°C
form  Powder
color  white
optical activity [α]19/D 26°, c = 2.3 in chloroform
Sensitive  Air Sensitive
BRN  1441045

Safety information for (-)-DIOP

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P271:Use only outdoors or in a well-ventilated area.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352:IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for (-)-DIOP

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