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Merck
CN

524433

N-Benzylcinchonidinium bromide

97%

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About This Item

Empirical Formula (Hill Notation):
C26H29BrN2O
CAS Number:
Molecular Weight:
465.43
UNSPSC Code:
12352101
NACRES:
NA.22
MDL number:
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InChI key

UUVFTQCFSNVLGV-SPTWEYDNSA-M

assay

97%

Quality Level

optical activity

[α]20/D −138°, c = 1 in chloroform

mp

190 °C (dec.) (lit.)

General description

N-Benzylcinchonidinium bromide is a chiral phase-transfer catalyst (PTC).

Application

N-Benzylcinchonidinium bromide (BCDBr) can be used:
  • To prepare various 4-(bromomethyl)benzenesulfonamides, which are employed as catalysts for asymmetric benzylation reactions.
  • As a phase transfer catalyst in the synthesis of organogelators via Michael addition reaction.
  • To catalyze the enantioselective alkylation of tert-butyl glycinate-benzophenone Schiff base furnishing the corresponding chiral α-amino acid.
  • To resolve symmetric biaryldiols via formation of inclusion complex with diols.

pictograms

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signalword

Warning

Hazard Classifications

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

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Synthesis of cinchonidinium salts containing sulfonamide functionalities and their catalytic activity in asymmetric alkylation reactions
Itsuno S, et al.
Tetrahedron Letters, 55(44), 6117-6120 (2014)
Enantioselective reactions of tert-butyl glycinate-benzophenone Schiff base catalyzed by chiral phase-transfer catalyst in aqueous media without any organic solvent.
Mase N, et al.
Tetrahedron Letters, 46(18), 3213-3216 (2005)
Separation of the Enantiomers of 2, 2?-Dihydroxy-1, 1?-binaphthyl and 10, 10?-Dihydroxy-9, 9?-biphenanthryl by Complexation with N-Alkylcinchonidinium Halides
Tanaka K, et al.
Angewandte Chemie (International ed. in English), 32(8), 1147-1148 (1993)
Synthesis of green organogelators with a sulfide linkage via solvent-free Michael addition: soft templates for the preparation of size-controlled gold nanoparticles
Delbecq F, et al.
Tetrahedron Letters, 54(7), 651-656 (2013)

Articles

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.

Maruoka catalysts enable enantioselective preparation of α-amino acids from glycine derivatives via asymmetric phase transfer catalysis.

不对称相转移催化(PTC)已被公认为是许多均相合成有机转化的“绿色”替代方法,并且已被广泛应用。合成修饰的金鸡纳生物碱是用于不对称PTC的典型手性有机催化剂。

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