Does 1/3 Diketones give iodoform test?
Recently a post appeared on ChemSE asking why cyclohexane-1,3-dione (dihydroresorcinol) 1a doesn’t give a positive iodoform test. Unfortunately, the post was subsequently taken down after several comments. A paper by Fuson and Bull reviewed the haloform reaction and stated that the iodoform test was negative for 1a.
Is haloform an oxidation reaction?
The haloform reaction (Section 23.4) is also an oxidative reaction. In this reaction, the methyl group of a methyl ketone is converted to a haloform such as iodoform, and the carbonyl carbon atom is oxidized to a carboxylic acid.
Does active methylene give iodoform test?
Statement – I: CH3COCH2COCH3 does not respond to the iodoform test with I2/OH – . Statement – II Presence of active methylene group attracts the base.
Does ethanol give haloform reaction?
The only primary alcohol and aldehyde to undergo this reaction are ethanol and acetaldehyde, respectively. 1,3-Diketones such as acetylacetone also give the haloform reaction.
What kind of haloform does cyclohexane-1, 3 Dione give?
However, dihydroresorcinol undergoes the bromoform reaction  to yield both glutaric acid 9a and bromoform 7 as does 5,5-dimethylcyclohexane-1,3-dione (dimedone)  1b yield β,β-dimethyl glutaric acid 9b and bromoform. Moreover, dimedone 1b affords the same diacid 9b and chloroform when sodium hypochlorite is employed.
Which is the correct formula for cyclohexanedione 1, 3?
1,3-Cyclohexanedione is an organic compound with the formula (CH 2) 4 (CO) 2. It is one of three isomeric cyclohexanediones. It is a colorless compound that occurs naturally. It is the substrate for cyclohexanedione hydrolase.
Can a 1, 3, 5-trihydroxybenzene perform the haloform reaction?
As far as I know it’s not possible for 1,3,5-trihydroxybenzene to give the haloform reaction. Only those organic compounds which can be converted to a methyl ketone or acetaldehyde by means of oxidation (by N a O X ( N a O H + X X 2) type agents which are present in the reaction mixture) give this reaction.
How is the enol 1, 3 cyclohexanedione produced?
1,3-Cyclohexanedione is produced by semi- hydrogenation of resorcinol: C 6 H 4 (OH) 2 + H 2 → C 6 H 8 O 2. 1,3-Cyclohexanedione exists in solution as the enol. It reacts under acid catalysis with alcohols to 3-alkoxyenones. Enolization of 1,3-cyclohexanedione.