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ch 3 ch(oh)ch 2 cho + h 2 → ch 3 ch(oh)ch 2 ch 2 oh This diol is a precursor to 1,3- butadiene , precursor to diverse polymers. Polymerization of 3-hydroxybutanal is also spontaneous, but can be stopped with the addition of water.
Crotyl groups attached to R. A crotyl group is an organic functional group with the formula RCH 2 CH=CHCH 3. [1] Systematically, it is called a but-2-en-1-yl group and exhibits geometric isomerism, being either cis (Z) or trans (E).
When necessary, the position of the hydroxyl group is indicated by a number between the alkane name and the -ol: propan-1-ol for CH 3 CH 2 CH 2 OH, propan-2-ol for CH 3 CH(OH)CH 3. If a higher priority group is present (such as an aldehyde , ketone , or carboxylic acid ), then the prefix hydroxy- is used, [ 19 ] e.g., as in 1-hydroxy-2 ...
HO 2 CC(OH) 2 CO 2 H Mesoxalic acid: oxopropanedioic acid ketomalonic acid ... C 2 H 5 C(CH3) 2 C 2 H 4 COOH 4,5-dimethylhexanoic acid CH 3 [CH(CH) 3] 2 C 2 H 4 COOH ...
The generic geminal diol. The 'R's represent any groups other than OH. A geminal diol (or gem-diol for short) is any organic compound having two hydroxyl functional groups (-O H) bound to the same carbon atom. Geminal diols are a subclass of the diols, which in turn are a special class of alcohols. Most of the geminal diols are considered unstable.
Propane-2,2-diol, an example of a geminal diol. A geminal diol has two hydroxyl groups bonded to the same atom. These species arise by hydration of the carbonyl compounds. The hydration is usually unfavorable, but a notable exception is formaldehyde which, in water, exists in equilibrium with methanediol H 2 C(OH) 2
It consists of a methylene bridge (−CH 2 − unit) bonded to a hydroxyl group (−OH). This makes the hydroxymethyl group an alcohol. It has the identical chemical formula with the methoxy group (−O−CH 3) that differs only in the attachment site and orientation to the rest of the molecule. However, their chemical properties are different ...
Propylene glycol (IUPAC name: propane-1,2-diol) is a viscous, colorless liquid. It is almost odorless and has a faintly sweet taste. Its chemical formula is CH 3 CH(OH)CH 2 OH. As it contains two alcohol groups, it is classified as a diol. An aliphatic diol may also be called a glycol.