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The general structure of an enamine. An enamine is an unsaturated compound derived by the condensation of an aldehyde or ketone with a secondary amine. [1] [2] Enamines are versatile intermediates. [3] [4] Condensation to give an enamine. [5] The word "enamine" is derived from the affix en-, used as the suffix of alkene, and the root amine.
A general linear imide functional group. In organic chemistry, an imide is a functional group consisting of two acyl groups bound to nitrogen. [1] The compounds are structurally related to acid anhydrides, although imides are more resistant to hydrolysis.
The relationship of imines to amines having double and single bonds can be correlated with imides and amides, as in succinimide vs acetamide. Imines are related to ketones and aldehydes by replacement of the oxygen with an NR group. When R = H, the compound is a primary imine, when R is hydrocarbyl, the compound is a
Acetone imine, or 2-propanimine is an organic compound and an imine with the chemical formula (CH 3) 2 CNH. It is a volatile and flammable liquid at room temperature. It is the simplest ketimine. This compound is mainly of academic interest.
or when an α-carbonyl proton is present to an enamine: In acidic environment the reaction product is an iminium salt by loss of water. This reaction type is found in many Heterocycle preparations for example the Povarov reaction and the Friedländer-synthesis to quinolines .
Heating magnesium amide to about 400 °C yields magnesium imide with the loss of ammonia. Magnesium imide itself decomposes if heated between 455 and 490 °C. [6] Beryllium imide forms from beryllium amide when heated to 230 °C in a vacuum. [7] When strontium metal is heated with ammonia at 750 °C, the dark yellow strontium imide forms. [8]
College football's preeminent rivalry has arrived: Army vs. Navy.. For the 125th time in both programs' rich history, the Black Knights (11-1 overall, 8-0 in AAC play) and Midshipmen (8-3, 6-2 in ...
This is a list of military conflicts, that United States has been involved in. There are currently 123 military conflicts on this list, 5 of which are ongoing. These include major conflicts like the American Revolutionary War, the War of 1812, the Mexican–American War, the American Civil War, the Spanish-American War, World War I, World War II and the Gulf War.