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676098

Sigma-Aldrich

(S)-VANOL

97%

Synonym(s):

(S)-3,3′-Diphenyl-2,2′-bi(1-naphthalol), (S)-3,3′-Diphenyl-2,2′-bi-(1-naphthol)

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About This Item

Empirical Formula (Hill Notation):
C32H22O2
CAS Number:
147702-14-5
Molecular Weight:
438.52
MDL number:
MFCD08459338
UNSPSC Code:
12352005
PubChem Substance ID:
24884836
NACRES:
NA.22

Assay

97%

optical activity

[α]20/D -314°, c = 1 in chloroform

mp

199-203 °C

SMILES string

Oc1c(c(cc2ccccc12)-c3ccccc3)-c4c(O)c5ccccc5cc4-c6ccccc6

InChI

1S/C32H22O2/c33-31-25-17-9-7-15-23(25)19-27(21-11-3-1-4-12-21)29(31)30-28(22-13-5-2-6-14-22)20-24-16-8-10-18-26(24)32(30)34/h1-20,33-34H

InChI key

NDTDVKKGYBULHF-UHFFFAOYSA-N

Application

(S)-VANOL is a vaulted biaryl ligand that may be used in the synthesis of coordinated complexes, such as (dppe)Pt(S-VANOL) [dppe= bis(diphenylphosphino)ethane] and (S,S-chiraphos)Pt(S-VANOL) [chiraphos= 2,3-bis(diphenylphosphino)butane].
VANOL has proven to be an excellent ligand in catalytic asymmetric Diels-Alder, imine aldol, and aziridination reactions.

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

Hazard Statements

H315,H318,H335,H413

Hazard Classifications

Aquatic Chronic 4 - Eye Dam. 1 - 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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Synthesis and characterization of chiral diphosphine platinum (II) VANOL and VAPOL complexes.
Becker JJ, et al.
Organometallics, 22(16), 3245-3249 (2003)
Bao. J. et al.
Journal of the American Chemical Society, 118, 3392-3392 (1996)
Su Yu et al.
Organic letters, 7(3), 367-369 (2005-01-28)
[reaction: see text] In an effort to develop a synthesis of the VAPOL ligand that avoids the use of a chromium carbene complex, a route was examined that involved the annulation of a naphthalene carboxamide via the method of Snieckus.
Yu Zhang et al.
Organic letters, 5(11), 1813-1816 (2003-05-24)
[reaction: see text] A copper-mediated deracemization of the vaulted biaryl ligands VANOL and VAPOL can be readily achieved in the presence of (-)-spartiene. The optimal procedure involves the in situ generation of copper(II) and leads to the reproducible formation of

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