4-Hydroxycyclohexanone

MOLECULE: 4-Hydroxycyclohexanone
[ Placeholder: Insert 4-Hydroxycyclohexanone Structure ]

1. Skeleton & Packing

  • Molecular Formula: C6H10O2
  • Degree of Unsaturation (DU): 2 (One aliphatic ring + one carbonyl pi bond)
  • Key Shapes/Rings/Chirality: Six-membered ring adopting a flexible chair conformation. Achiral, but exists as cis/trans diastereomers.

2. The Physical Profile

  • Strongest IMF: Hydrogen Bonding (via Alcohol) and Strong Dipole-Dipole (via Ketone)
  • Water Soluble? (Yes/No): Yes (6 Carbons divided by 2 polar oxygen networks yields a clean 3:1 ratio)
  • High or Low BP/MP? High MP/BP (Solid at room temperature; intensive intermolecular stickiness)

3. Electronic Map

  • Major dipole pull toward Carbonyl oxygen, leaving a massive electron deficiency (δ+) on the C1 carbonyl carbon.
  • Identify resonance (Yes/No): Yes (Keto-enol tautomerism introduces resonance stabilization to any negative charge forming on the alpha positions at C2/C6)
  • Most acidic proton is on the alcohol (−OH, pKa ≈ 16), but the alpha-protons on C2/C6 are also distinctively acidic (pKa ≈ 20).

4. Reactive Portfolio

  • Circle Nucleophilic sites: Oxygen lone pairs. Deprotonation at C2/C6 produces a highly reactive carbon-centered enolate nucleophile.
  • Box Electrophilic sites: The C1 carbonyl carbon is a definitive, highly reactive target.
  • Steric Hindrance? (Low/Med/High): Low to Medium (The electrophilic carbonyl center is flat, trigonal planar sp2 and entirely unhindered for attack)