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Neopentane is a flammable gas at room temperature and pressure which can condense into a highly volatile liquid on a cold day, in an ice bath, or when compressed to a higher pressure. Neopentane is the simplest alkane with a quaternary carbon, and has achiral tetrahedral symmetry.
Neopentyl alcohol was the first described in 1891 by L. Tissier, who prepared it by reduction of a mixture of trimethyl acetic acid and trimethylacetyl chloride with sodium amalgam. [4] Neopentyl alcohol can be converted to neopentyl iodide by treatment with triphenylphosphite/methyl iodide: [5]
Neopentyl glycol is synthesized industrially by the aldol reaction of formaldehyde and isobutyraldehyde.This creates the intermediate hydroxypivaldehyde, which can be converted to neopentyl glycol by either a Cannizzaro reaction with excess formaldehyde, or by hydrogenation using palladium on carbon.
Pentane is an organic compound with the formula C 5 H 12 —that is, an alkane with five carbon atoms. The term may refer to any of three structural isomers, or to a mixture of them: in the IUPAC nomenclature, however, pentane means exclusively the n-pentane isomer, in which case pentanes refers to a mixture of them; the other two are called isopentane (methylbutane) and neopentane ...
Nutrition: 45 calories, 0.5 g fat (0 g saturated fat), 430 mg sodium, 10 g carbs (2 g fiber, 5 g sugar), 2 g protein. With 45 calories per serving and less than 1 gram of total fat, Barilla makes ...
Pentaerythritol was first reported in 1891 by German chemist Bernhard Tollens and his student P. Wigand. [5] It may be prepared via a base-catalyzed multiple-addition reaction between acetaldehyde and 3 equivalents of formaldehyde to give pentaerythrose (CAS: 3818-32-4), followed by a Cannizzaro reaction with a fourth equivalent of formaldehyde to give the final product plus formate ion.
Berberine, a plant compound traditionally used in herbal medicine, is today commonly stocked on the shelves of health food stores and pharmacies as a supplement. Beyond weight loss, berberine also ...
Eat a healthy diet that’s low in saturated fats, added sugars, and sodium. Aim to get at least 150 minutes a week of moderate-intensity aerobic activity, like walking fast or biking.