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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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Empirical Formula (Hill Notation):
C21H18N2O2
CAS Number:
Molecular Weight:
330.38
MDL number:
UNSPSC Code:
12352005
PubChem Substance ID:
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

Related Categories

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

Signal Word

Warning

Hazard Statements

Hazard Classifications

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

Target Organs

Respiratory system

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

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

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