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798363

Sigma-Aldrich

Endo-Phenyl Kwon [2.2.1] Bicyclic Phosphine

95% (HPLC)

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Synonym(s):
(1S,4S,5S)-5-(phenyl)-2-tosyl-2-aza-5-phosphabicyclo[2.2.1]heptane
Empirical Formula (Hill Notation):
C18H20NO2PS
Molecular Weight:
345.40
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

95% (HPLC)

form

powder

storage condition

under inert gas

mp

96-101 °C

storage temp.

2-8°C

SMILES string

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

InChI

1S/C18H20NO2PS/c1-14-7-9-18(10-8-14)23(20,21)19-12-17-11-15(19)13-22(17)16-5-3-2-4-6-16/h2-10,15,17H,11-13H2,1H3/t15-,17-,22?/m0/s1

InChI key

BWXYDSDVFPJTFY-TWMUNHRGSA-N

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This Item
798371798436798444
form

powder

form

powder

form

powder

form

powder

Quality Level

100

Quality Level

100

Quality Level

100

Quality Level

100

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

mp

96-101 °C

mp

158-162 °C

mp

-

mp

156-161 °C

storage condition

under inert gas

storage condition

under inert gas

storage condition

under inert gas

storage condition

-

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.

pictograms

Exclamation mark

signalword

Warning

hcodes

Hazard Classifications

Acute Tox. 4 Oral

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


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Lingchao Cai et al.
Journal of the American Chemical Society, 138(10), 3298-3301 (2016-02-26)
Described herein is a catalytic asymmetric total synthesis of (-)-actinophyllic acid, with the key step being a chiral phosphine-catalyzed [3 + 2] annulation between an imine and an allenoate to form a pyrroline intermediate in 99% yield and 94% ee.
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
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

Articles

Chiral phosphines have been the staple ligands for asymmetric transition metal catalysis and more recently operate as catalysts in organic phosphinocatalysis.

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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