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79790

Sigma-Aldrich

Phthalimide potassium salt

purum, ≥99.0% (NT)

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Synonym(s):
PPI, 1,3-Dihydro-1,3-dioxoisoindole potassium salt, Potassium phthalimide
Empirical Formula (Hill Notation):
C8H4KNO2
CAS Number:
Molecular Weight:
185.22
Beilstein:
3598719
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

grade

purum

Quality Level

Assay

≥99.0% (NT)

form

powder

impurities

≤0.5% water

mp

>300 °C (lit.)

SMILES string

[K]N1C(=O)c2ccccc2C1=O

InChI

1S/C8H5NO2.K/c10-7-5-3-1-2-4-6(5)8(11)9-7;/h1-4H,(H,9,10,11);/q;+1/p-1

InChI key

FYRHIOVKTDQVFC-UHFFFAOYSA-M

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Application

Phthalimide potassium salt (PPI) is widely used for the synthesis of primary amines from corresponding alkyl halides, known as Gabriel synthesis. Some of the other applications are:
  • Preparation of phthalimidogold precatalyst for gold catalysis.
  • It can be used in the palladium-catalyzed enantioselective synthesis of α- and β-amino acids.
  • Potassium phthalimide is as an effective organocatalyst for the cyanosilylation of carbonyl compounds to synthesize cyanohydrin trimethylsilyl ethers.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2

WGK

WGK 3

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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One-pot synthesis of core-expanded naphthalene diimides: enabling N-substituent modulation for diverse n-type organic materials.
Hu Y, et al.
Organic Letters, 14(1), 292-295 (2011)
A facile one-pot synthesis of N-substituted phthalimides using a catalytic amount of crown ether.
Soai K, et al.
Bulletin of the Chemical Society of Japan, 55(5), 1671-1672 (1982)
γ?Aminobutyric Acid
DeWitt C C
Organic Syntheses, 4-4 (1943)
Activation of trimethylsilyl cyanide by potassium phthalimide for facile synthesis of TMS-protected cyanohydrins.
Dekamin MG and Karimi Z.
Journal of Organometallic Chemistry, 694(12), 1789-1794 (2009)
Stanton Hon Lung Kok et al.
Bioorganic & medicinal chemistry, 16(7), 3626-3631 (2008-02-26)
Phthalic anhydride is a highly toxic substance, facing, however, the problem of hydrolysis. In fact, it is rapidly hydrolyzed in aqueous medium, generating phthalic acid as the final product, which is almost harmless to viable cells. Here we describe the

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