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464155

Sigma-Aldrich

[3aR-[2(3′aR*,8′aS*),3′aβ,8′aβ]]-(+)-2,2′-Methylenebis[3a,8a-dihydro-8H-indeno[1,2-d]oxazole]

98%

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About This Item

Empirical Formula (Hill Notation):
C21H18N2O2
CAS Number:
180186-94-1
Molecular Weight:
330.38
MDL number:
MFCD06797115
UNSPSC Code:
12352005
PubChem Substance ID:
24870145
NACRES:
NA.22

Assay

98%

optical activity

[α]22/D +353°, c = 3.7 in chloroform

mp

204-206 °C (lit.)

SMILES string

C1[C@@H]2OC(CC3=N[C@H]4[C@@H](Cc5ccccc45)O3)=N[C@H]2c6ccccc16

InChI

1S/C21H18N2O2/c1-3-7-14-12(5-1)9-16-20(14)22-18(24-16)11-19-23-21-15-8-4-2-6-13(15)10-17(21)25-19/h1-8,16-17,20-21H,9-11H2/t16-,17-,20+,21+/m0/s1

InChI key

BDHSVQLSNIGJNC-ZCLUNYJNSA-N

Application

[3aR-[2(3′aR*,8′aS*),3′aβ,8′aβ]]-(+)-2,2′-Methylenebis[3a,8a-dihydro-8H-indeno[1,2-d]oxazole] is a C2 symmetric chiral ligand based on bis(oxazoline) moiety, which can be used in enantioselective catalysis. It easily forms bidentate coordination complexes due to the strong affinity of the oxazoline nitrogen for various metals. Copper complex of this chiral ligand can be utilized as a reusable catalyst in the cyclopropanation reaction between styrene and ethyl diazoacetate.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315,H319,H335

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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C 2-symmetric chiral bis (oxazoline) ligands in asymmetric catalysis
Desimoni G, et al.
Chemical Reviews, 106(9), 3561-3651 (2006)
Polytopic Bis (oxazoline)-Based Ligands for the Development of Recoverable Catalytic Systems Applied to the Cyclopropanation Reaction
Garcia JI, et al.
European Journal of Organic Chemistry, 2014(7), 1531-1540 (2014)
Pfaltz, A.
Accounts of Chemical Research, 26, 339-339 (1993)
Bolm, C.
Angewandte Chemie (International Edition in English), 30, 542-542 (1991)
Gant, T.G. Meyers, A.I.
Tetrahedron, 50, 2297-2297 (1994)

Articles

C2-symmetric chiral bisoxazolines (BOX) ligands

BOX ligand complex enhances catalytic enantioselective aziridination of styrene, with phenyl substituents proving superior over t-Bu groups.

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