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Piperidine is used as a solvent and as a base. The same is true for certain derivatives: N-formylpiperidine is a polar aprotic solvent with better hydrocarbon solubility than other amide solvents, and 2,2,6,6-tetramethylpiperidine is a highly sterically hindered base, useful because of its low nucleophilicity and high solubility in organic ...
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Piperine can also be prepared by treating the solvent-free residue from a concentrated alcoholic extract of black pepper with a solution of potassium hydroxide to remove resin (said to contain chavicine, an isomer of piperine). [7] The solution is decanted from the insoluble residue and left to stand overnight in alcohol.
4-Amino-2,2,6,6-tetramethyl-4-piperidine is an organic compound with the formula H 2 NCH(CH 2 CMe 2) 2 NH (where Me = CH 3). Classified as a diamine , it is a colorless oily liquid. The compound is an intermediate in the preparation of Bobbitt's salt , an oxidant used in organic synthesis.
The perception of tooth colour is multi-factorial. Reflection and absorption of light by the tooth can be influenced by a number of factors including specular transmission of light through the tooth; specular reflection at the surface; diffuse light reflection at the surface; absorption and scattering of light within the dental tissues; enamel mineral content; enamel thickness; dentine colour ...
N-Formylpiperidine is an organic compound with the formula C 6 H 11 NO. It is the amide of formic acid and piperidine.It can be used as a polar aprotic solvent, with better hydrocarbon solubility than other amide solvents such as dimethylformamide (DMF). [1]