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polychrest

万应药

The Collaborative International Dictionary of English v.0.48 (gcide)

Polychrest \Pol"y*chrest\, n. [Gr. ? useful for many purposes;
poly`s many ? useful, fr. ? to use: cf. F. polychreste.]
(Med.)
A medicine that serves for many uses, or that cures many
diseases. [Obs.]
[1913 Webster]

{Polychrest salt} (Old Med. Chem.), potassium sulphate,
specifically obtained by fusing niter with sulphur.
[1913 Webster]

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Reagent Friday: Sodium Amide (NaNH2) - Master Organic Chemistry
Sodium amide (NaNH2) is a strong base, often used with NH3 as solvent Useful in formation of acetylides + double elimination giving alkynes
Sodium amide - Wikipedia
NaNH2 conducts electricity in the fused state, its conductance being similar to that of NaOH in a similar state NaNH2 has been widely employed as a strong base in organic synthesis
Sodium Amide (NaNH2): A Comprehensive Technical Guide
Sodium amide (NaNH2), also known as sodamide, is a highly reactive inorganic compound that serves as a potent base in a myriad of chemical transformations Its utility, particularly in organic synthesis, stems from its strong basicity and nucleophilic character
Nanh2 Reaction: Understanding the Chemical Reaction - completeera. com
The Nanh2 reaction is a powerful tool in organic synthesis, offering a versatile method for forming carbon-carbon bonds Understanding its mechanism, applications, and safety considerations is essential for chemists working with this reaction
Sodium amide | NaNH2 | CID 24533 - PubChem
When sodium amide and chromic anhydride are mixed together a vigorous reaction results; the same occurs with other oxidizing agents including dinitrogen tetraoxide, potassium chlorate, sodium nitrite
10. 8: Alkynes - Chemistry LibreTexts
Amide, usually NaNH2, is a base that is strong enough to cause both reactions carried out consecutively in the same mixture Two molar equivalents of sodium amide per mole of the dihalide are required to ensure the elimination occur two times
NaNH2 Definition for Organic Chemistry | Fiveable
NaNH2 is highly reactive and can participate in unwanted side reactions, such as the formation of explosive compounds Additionally, the generation of NaNH2 in situ from sodium metal and ammonia requires specialized equipment and careful control of reaction conditions
WhenCH3CH2CHCl2 is treated with NaNH2 the product formed . . . - Vedantu
Sodium amide is a strong reducing agent which removes the halide atoms and generates an alkyne We know that Sodium amide (N a N H 2) is a strong base and is used for deprotonation of weak acids and also for elimination reactions
NaNH2 properties - Chemical Portal
The compound's ionic solid-state structure and reactivity patterns have been extensively characterized through modern analytical techniques While safety concerns limit some applications, sodium amide continues to serve important roles in industrial processes and laboratory synthesis

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