798347

Sigma-Aldrich

Exo-2-Naphthyl Kwon [2.2.1] Bicyclic Phosphine

Synonym(s):
(1S,4S,5R)-5-(naphthalen-2-yl)-2-tosyl-2-aza-5-phosphabicyclo[2.2.1]heptane
Empirical Formula (Hill Notation):
C22H22NO2PS
Molecular Weight:
395.45
PubChem Substance ID:
NACRES:
NA.22

form

powder

Quality Level

mp

153-158 °C

storage temp.

2-8°C

SMILES string

O=S(N1C[C@H]2[P@](C3=CC=C4C(C=CC=C4)=C3)C[C@@H]1C2)(C5=CC=C(C)C=C5)=O

InChI

1S/C22H22NO2PS/c1-16-6-10-22(11-7-16)27(24,25)23-14-21-13-19(23)15-26(21)20-9-8-17-4-2-3-5-18(17)12-20/h2-12,19,21H,13-15H2,1H3

InChI key

SJQXCVUHXMHJMD-UHFFFAOYSA-N

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Application

The bicyclic, chiral phosphine was developed by the Kwon Research Group.Its initial applications were for asymmetric [3+2] annulation between allenes and imines as well as the first examples of phosphine-catalyzed asymmetric syntheses of 1,2,3,5-substituted pyrrolines. Along with nucleophilic organocatalysis, the P-chiral phosphines may also find utility in asymmetric transition-metal catalysis.

Packaging

100 mg in glass bottle

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Precautionary Statements

RIDADR

NONH for all modes of transport

WGK Germany

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Christopher E Henry et al.
Journal of the American Chemical Society, 136(34), 11890-11893 (2014-08-08)
We have prepared two new diastereoisomeric 2-aza-5-phosphabicyclo[2.2.1]heptanes from naturally occurring trans-4-hydroxy-L-proline in six chemical operations. These syntheses are concise and highly efficient, with straightforward purification. When we used these chiral phosphines as catalysts for reactions of γ-substituted allenoates with imines...
Ian P Andrews et al.
Chemical science, 3(8), 2510-2514 (2012-07-17)
In this study we performed the total synthesis of the terpene indole alkaloid (+)-ibophyllidine through a pathway involving asymmetric phosphine catalysis, with our novel l-4-hydroxyproline-derived chiral phosphine mediating the key [3 + 2] annulation. Hydrogenation of the [3 + 2]...
Yiting Gu et al.
Journal of the American Chemical Society, 137(19), 6400-6406 (2015-04-24)
Two classes of phosphine-catalyzed addition/cycloaddition domino reactions of β'-acetoxy allenoate 1 have been developed. The reaction of 1 with 2-acyl-3-methyl-acrylonitrile 2 readily occurs to give 2-oxabicyclo[3.3.1]nonane 3, furnishing the β'-addition/[4 + 4] cycloaddition domino sequence. In this sequence, β'C of...
Articles
Chiral phosphines have been the staple ligands for asymmetric transition metal catalysis and more recently operate as catalysts in organic phosphinocatalysis.
Read More
Related Content
The Kwon Group has made major strides in the development and application of nucleophilic phosphinocatalysis reactions as a means to synthesize carbo- and heterocycles that serve as synthetic intermediates for both natural products and medicinally useful compounds.
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