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456713

Sigma-Aldrich

(DHQD)2AQN

95%

Synonym(s):

Hydroquinidine (anthraquinone-1,4-diyl) diether

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About This Item

Empirical Formula (Hill Notation):
C54H56N4O6
CAS Number:
176298-44-5
Molecular Weight:
857.05
MDL number:
MFCD00467216
UNSPSC Code:
12352005
PubChem Substance ID:
329756886
NACRES:
NA.22

Assay

95%

form

solid

optical activity

[α]/D -498°

mp

165 °C (lit.)

SMILES string

CC[C@@H]1CN2CCC1CC2[C@@H](Oc3ccc(O[C@H](C4CC5CCN4C[C@H]5CC)c6ccnc7ccc(OC)cc67)c8C(=O)c9ccccc9C(=O)c38)c%10ccnc%11ccc(OC)cc%10%11

InChI

1S/C54H56N4O6/c1-5-31-29-57-23-19-33(31)25-45(57)53(39-17-21-55-43-13-11-35(61-3)27-41(39)43)63-47-15-16-48(50-49(47)51(59)37-9-7-8-10-38(37)52(50)60)64-54(46-26-34-20-24-58(46)30-32(34)6-2)40-18-22-56-44-14-12-36(62-4)28-42(40)44/h7-18,21-22,27-28,31-34,45-46,53-54H,5-6,19-20,23-26,29-30H2,1-4H3/t31-,32-,33+,34+,45-,46-,53+,54+/m1/s1

InChI key

ARCFYUDCVYJQRN-ZPCQJLRDSA-N

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General description

(DHQD)2AQN is a biscinchona alkaloid.

Application

(DHQD)2AQN may be used to:
  • Catalyze the asymmetric cyanation of ketones to form tertiary cyanohydrin carbonates.
  • Facilitate the asymmetric ring opening of terminal N-nosylaziridines with trimethylsilyl cyanide.
Superior ligand for asymmetric dihydroxylation reactions of most olefins bearing aliphatic substituents or olefins having heteroatoms in the allylic position.

Legal Information

Sold under license from Rhodia Pharma Solutions.

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)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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A highly enantioselective chiral Lewis base-catalyzed asymmetric cyanation of ketones.
Tian SK and Deng L.
Journal of the American Chemical Society, 123(25), 6195-6196 (2001)
Michael Wilking et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 22(51), 18601-18607 (2016-10-12)
The cinchona alkaloid dimer (DHQD)2 PHAL has been shown to be a broadly applicable catalyst for asymmetric halogenations. However, this catalyst does not have to be dimeric and a class of monomeric quinidine and quinine-derived catalysts was prepared, often showing
Asymmetric recognition and sequential ring opening of 2-substituted-N-nosylaziridines with (DHQD) 2AQN and TMSNu.
Minakata S, et al.
Organic & Biomolecular Chemistry, 7(4), 641-643 (2009)
Eecker, H. Sharpless, K.B.
Angewandte Chemie (International Edition in English), 35, 448-448 (1996)

Articles

Cinchona Alkaloids

Asymmetric phase-transfer catalysis (PTC) has been recognized as a “green” alternative to many homogeneous synthetic organic transformations, and has found widespread application. Synthetically modified cinchona alkaloids are typical chiral organocatalysts used in asymmetric PTC.

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