Potassium Azide (Sodium Azide)

2007 ◽  
pp. 139-141 ◽  
Author(s):  
M. W. Miller ◽  
L. F. Audrieth ◽  
W. F. Filbert
Keyword(s):  
Sodium Azide ◽  
Potassium Azide

Preparation and properties of crystals of potassium and sodium azide

1958 ◽  
Vol 246 (1245) ◽  
pp. 233-240 ◽  
Keyword(s):  
Sodium Azide ◽  
Refractive Indices ◽  
Etch Pits ◽  
Interference Microscope ◽  
X Ray ◽  
Rapid Deterioration ◽  
Polarizing Microscope ◽  
Deep Groove ◽  
Potassium Azide ◽  
Multiple Twinning

When sodium or potassium azide crystals that have undergone shock or strain are observed in a polarizing microscope brightly coloured birefringent bands appear. Viewed along the c -axis these bands intersect at 120° in therhombohedral NaN 3 and at 90° in the tetragonal KN 3 . Each band is a plane extending through the crystal at an angle to the c -axis. From the thickness of the crystal and the width of the band one finds that these are (110) planes in NaN 3 and (112) planes in KN 3 , an observation verified by X-ray examination. Interference microscope measurements indicate that there is either a step or a ‘ramp’ on the surface where these planes emerge. Where the ‘ramp’ appears, lamellar twinning has occurred and the measured birefringence agrees with that calculated from the geometry and refractive indices. The steps might be unresolved ‘ramps’ or may be due to slip, a combination of slip and twinning, multiple twinning, or rapid deterioration of the ‘ramp’. Decomposition occurs readily at the intersection of these planes and the surface. Exposure to 10 7 r of γ -rays produces a deep groove at this line and many pyramidal etch pits. In addition, the methods used to grow the KN 3 and NaN 3 crystals are briefly described.

Tetrazoloquinolines: Synthesis, Reactions, and Applications

2020 ◽  
Vol 24 (4) ◽  
pp. 439-464 ◽  
Author(s):  
Rizk E. Khidre ◽  
Tahah A. Ameen ◽  
Mounir A. I. Salem
Keyword(s):  
Carboxylic Acid ◽  
Chemical Reactions ◽  
Sodium Azide ◽  
Biological Activities ◽  
Quinoline Derivatives ◽  
Pharmacological Activities ◽  
Synthesis Reactions ◽  
Intramolecular Cyclocondensation

This review summarizes the synthesis, reactions, and biological activities of tetrazolo[1,5-a]quinoline derivatives. These derivatives were synthesized by several methods such as i) from the reaction of 2-chloroquinoline with sodium azide ii) from diazotization 2-hydrazinylquinoline derivatives, and iii) from intramolecular cyclocondensation of 2-azidoarylidenes. Also, the chemical reactions and pharmacological activities of some tetrazoloquinolines such as tetrazolo[1,5-a]quinoline-4-carbaldehyde, 5-chlorotetrazolo[ 1,5-a]quinoline, 4-(chloromethyl)tetrazolo[1,5-a]quinoline, tetrazolo[1,5- a]quinoline-4-carboxylic acid, and 5-azidotetrazolo[1,5-a]quinoline were discussed.

The preparation of 3-amino-3-deoxy-1,2-O-isopropylidene-α-L-erythrofuranose, 3-amino-3-deoxy-1,2-O-isopropylidene-β-D-threofuranose and their derivatives

1980 ◽  
Vol 45 (12) ◽  
pp. 3378-3390 ◽  
Author(s):  
Jiří Jarý ◽  
Milena Masojídková ◽  
Ivan Kozák ◽  
Miroslav Marek ◽  
Jan Staněk
Keyword(s):  
Nucleophilic Substitution ◽  
Sodium Azide ◽  
Sodium Benzoate ◽  
Nmr Spectra ◽  
Subsequent Reduction ◽  
H Nmr ◽  
Amino Derivatives

The title amino derivatives VI and XIV were prepared by nucleophilic substitution of p-toluenesulfonyl derivatives II and XVII with sodium azide or hydrazine and subsequent reduction. Nucleophilic substitution of compounds II and XVII with sodium benzoate was also investigated. The 1H NMR spectra of the substances prepared are discussed.

scholarly journals An efficient and practical chemo-enzymatic route to (3R,3aR,6R,6aR)-hexahydrofuro[3,2-b]furan-6-amino-3-ol (6-aminoisomannide) from renewable sources

SynOpen ◽  
2021 ◽  
Author(s):  
Valerio Zullo ◽  
Antonella Petri ◽  
Anna Iuliano
Keyword(s):  
Hydroxy Group ◽  
Sodium Azide ◽  
Hydroxyl Group ◽  
Azido Group ◽  
One Pot ◽  
Renewable Sources ◽  
Nucleophilic Displacement ◽  
Trifluoromethanesulfonic Anhydride ◽  
Enzymatic Route

The synthesis of 6-aminoisomannide is easily achieved starting from the renewable, inexpensive and commercially available isosorbide, in 66% overall yield. A biocatalysed highly regioselective acetylation of the 3-endo hydroxyl group of isosorbide was followed by the stereospecific interconversion of the 6-exo hydroxyl group into azido group, through reaction with trifluoromethanesulfonic anhydride followed by nucleophilic displacement of the triflate group by sodium azide. Finally, reduction of the azido group and deacetylation of the 3-hydroxy group were performed one pot by using LiAlH4.

Mechanistic understanding of the Cu(i)-catalyzed domino reaction constructing 1-aryl-1,2,3-triazole from electron-rich aryl bromide, alkyne, and sodium azide: a DFT study

2021 ◽  
Author(s):  
Hanlin Gan ◽  
Liang Peng ◽  
Feng Long Gu
Keyword(s):  
Density Functional Theory ◽  
Dft Calculations ◽  
Sodium Azide ◽  
Density Functional ◽  
Dft Study ◽  
Domino Reaction ◽  
Aryl Bromide ◽  
Functional Theory ◽  
Mechanistic Understanding

The mechanism of the Cu(i)-catalyzed domino reaction furnishing 1-aryl-1,2,3-triazole assisted by CuI and 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) is explored with density functional theory (DFT) calculations.

Palladium Catalyzed Cascade Azidation/Carbonylation of Aryl Halides with Sodium Azide for the Synthesis of Amides

2021 ◽  
Author(s):  
Zhuang Qi ◽  
Shan‐Shan Li ◽  
Lin Li ◽  
Qi Qin ◽  
Li‐Miao Yang ◽  
...  
Keyword(s):  
Sodium Azide ◽  
Aryl Halides ◽  
Palladium Catalyzed
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