798401
Exo-Phenyl, N-Benzyl Kwon [2.2.1] Bicyclic Phosphine
Synonym(s):
(1S,4S,5R)-2-benzyl-5-phenyl-2-aza-5-phosphabicyclo[2.2.1]heptane
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About This Item
Empirical Formula (Hill Notation):
C18H20NP
Molecular Weight:
281.33
PubChem Substance ID:
UNSPSC Code:
12352005
form
powder
storage condition
under inert gas
storage temp.
2-8°C
SMILES string
[H][C@]12CN(CC3=CC=CC=C3)[C@](C2)([H])C[P@]1C4=CC=CC=C4
InChI
1S/C18H20NP/c1-3-7-15(8-4-1)12-19-13-18-11-16(19)14-20(18)17-9-5-2-6-10-17/h1-10,16,18H,11-14H2
InChI key
BAUUJXYBOGWDRZ-UHFFFAOYSA-N
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.
Other Notes
Hydroxyproline-Derived Pseudoenantiomeric [2.2.1] Bicyclic Phosphines: Asymmetric Synthesis of (+)- and (-)-Pyrrolines
Technology Spotlight- Kwon Phosphines: P-Chiral Monodentate Phosphines from Hydroxyproline
Aldrichimica Acta Review- Nucleophilic Chiral Phosphines: Powerful and Versatile Catalysts for Asymmetric Annulations
Technology Spotlight- Kwon Phosphines: P-Chiral Monodentate Phosphines from Hydroxyproline
Aldrichimica Acta Review- Nucleophilic Chiral Phosphines: Powerful and Versatile Catalysts for Asymmetric Annulations
signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Storage Class
13 - Non Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
Regulatory Information
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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]
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
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