Search results
Results From The WOW.Com Content Network
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 ...
Air Force Two, carrying Vice President Walker and his staff, is flying over the South Pacific when it is suddenly damaged by an electrical storm. The plane is forced to ditch in the ocean off the coast of the (fictional) country of San Pietro, located near the Solomon Islands. As the few survivors make it onto the beach of a small off-shore ...
Iodine in potassium iodide added to an alcoholic solution of the base in the presence of a little hydrochloric acid gives a characteristic periodide, B 2 ·HI·I 2, crystallizing in steel-blue needles with melting point 145 °C. [7] Piperine can be hydrolyzed by an alkali into piperidine and piperic acid. [7]
The following chart shows the solubility of various ionic compounds in water at 1 atm pressure and room temperature (approx. 25 °C, 298.15 K). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to precipitate.
Substance Formula 0 °C 10 °C 20 °C 30 °C 40 °C 50 °C 60 °C 70 °C 80 °C 90 °C 100 °C Barium acetate: Ba(C 2 H 3 O 2) 2: 58.8: 62: 72: 75: 78.5: 77: 75
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.
In a statement, a spokesperson for the Secretary of the Air Force tells Scripps News that the potential move of the Air National Guard units into the U.S. Space Force is "to ensure the mission ...
The 2,6-dimethylpiperidines are prepared by reduction of 2,6-dimethylpyridine (2,6-lutidine). The achiral isomer is the predominant isomer produced in this reaction. The 2,6-dimethylpiperidines are of interest for their conformational properties. The (R,S)-isomer exists largely in the chair conformation with equatorial methyl groups.