geminal (from Latin gemini 'twins') refers to the relationship between two atoms or functional groups that are attached to the same atom. A geminal diol...

A geminal diol (or gem-diol for short) is any organic compound having two hydroxyl functional groups (-OH) bound to the same carbon atom. Geminal diols...

and propylene-1,3-diol, or beta propylene glycol, HO−CH2−CH2−CH2−OH. A geminal diol has two hydroxyl groups bonded to the same atom. These species arise...

alkylimino-de-oxo-bisubstitution. Hemiaminals can be viewed as a blend of aminals and geminal diol. They are a special case of amino alcohols. Hemiaminals form from...

Geminal halide hydrolysis is an organic reaction. The reactants are geminal dihalides with a water molecule or a hydroxide ion. The reaction yields ketones...

2-Butanediol 1,3-Butanediol 1,4-Butanediol 2,3-Butanediol There are also two geminal diols (gem-diols), which are less stable: 1,1-Butanediol, hydrate of butanal...

3-Propanediol (trimethylene glycol) 1,1-Propanediol (geminal diol) 2,2-Propanediol (geminal diol) Diol (Glycol) Geminal diol Vicinal diol This set index page lists...

methods. Many other methods have been developed, examples include: By geminal halide hydrolysis. By hydration of alkynes. Such processes occur via enols...

catalyst to give geminal diacetates. A former industrial route to vinyl acetate involved the intermediate ethylidene diacetate, the geminal diacetate obtained...

Chloral hydrate is a geminal diol with the formula Cl3C−CH(OH)2. It was first used as a sedative and hypnotic in Germany in the 1870s. Over time it was...

Wikimedia Commons has media related to Propanediols. Look up propanediol in Wiktionary, the free dictionary. Propanediol may refer to any of four isomeric...

groups) vs. geminal (between the atoms in a single methyl group) interactions to hyperconjugation. In separate experiments, the geminal and vicinal interactions...

Dihydrolipoic acid, a vitamin Dithiothreitol, a reagent in protein biochemistry Geminal dithiols have the formula RR'C(SH)2. They are derived from aldehydes and...

by other authors. With increasing number of fluorine atoms on the same (geminal) carbon the other bonds become stronger and shorter. This can be seen by...

chloride and HCl to form an aldehyde. Geminal halide hydrolysis Geminal dihalides Hydrolysis of primary geminal dihalides to yield aldehydes. Meyers synthesis...

alkanes −2, −1 alkanes, alkenes, alcohols, alkyl halides, amines 0 alkynes, geminal diols +1 aldehydes +2 chloroform, hydrogen cyanide, ketones +3 carboxylic...

which is a hemihydrate of hexafluoropropane-2,2-diol (F 3C) 2C(OH) 2, a geminal diol. The industrial route to HFA involves treatment of hexachloroacetone...

structure. Imidic acids can be formed by metal-catalyzed dehydrogenation of geminal amino alcohols. For example, methanolamine, the parent compound of the...

of geminal, signals that both bromine atoms are bonded to the same atom (i.e., in a 1,1-relationship). For example, 1,1-dibromobutane is geminal. While...

an organic compound with chemical formula CH2(OH)2. It is the simplest geminal diol. In aqueous solutions it coexists with oligomers (short polymers)...

smallest member, glyoxylic acid, semialdehydes often exist as hydrates (geminal diols) HO2C(CH2)nCH(OH)2. Some of semialdehydes and their parent dicarboxylic...

oxidized to chromium(III) eliminating two equivalents of a halide. The geminal carbodianion complex thus formed (determined as [Cr2Cl4(CHI)(THF)4]) reacts...

the enol-dione equilibrium in acetylacetone. Alkenal Enolase Ketone Ynol Geminal diol, another form of ketones and aldehydes in water solutions Regioselectivity...

variable. Under Wurtz conditions, vicinal dihalides yield alkenes, whereas geminal dihalides convert to alkynes. Bicyclobutane was prepared this way from...

+ C2H2 → CH3CHO Aldehydes and to some extent even ketones, hydrate to geminal diols. The reaction is especially dominant for formaldehyde, which, in...

Glynn, Gary A.; Grenon, Brian J. (1967-01-01). "The decarbethoxylation of geminal dicarbethoxy compounds". Tetrahedron Letters. 8 (3): 215–217. doi:10...

Ninhydrin (2,2-dihydroxyindane-1,3-dione) is an organic compound with the formula C6H4(CO)2C(OH)2. It is used to detect ammonia and amines. Upon reaction...

1,2-dibromocompounds are debrominated by zinc dust to give alkenes and geminal dihalides can react with strong bases to give carbenes. Haloalkanes undergo...

{\displaystyle {\ce {H2SO4 + CH3CO2H <=> HSO4- + CH3C(OH)2+}}} The unlikely geminal diol species CH3C(OH)+2 is stable in these environments. For aqueous solutions...

[1+2]cycloaddition to form geminal dichlorocyclopropanes. These can be reduced to cyclopropanes or hydrolysed to give cyclopropanones by a geminal halide hydrolysis...