Aldehyde and ketone problems (6)

Organic chemistry: Aldehyde/ketone nomenclature problems. Spectroscopy problems. Hydration (nucleophilic addition of water to aldehydes and ketones to form geminal diols). Reactivity of aldehydes and ketones. Effects of acid or base on reactivity. Mass spectrometry of aldehydes and ketones; McLafferty rearrangement. Nucleophilic addition of thiols to aldehydes and ketones to form thioacetals; desulfurization of thioacetals with Raney nickel.

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(1) Aldehyde/ketone nomenclature problems
(2) Continued. Spectroscopy problems
(3) Contined. Hydration (nucleophilic addition of water to aldehydes and ketones to form geminal diols)
(4) Continued. Reactivity of aldehydes and ketones
(5) Continued. A hydration problem
(6) Continued. Effects of acid or base on reactivity
(7) Continued
(8) Continued. Mass spectrometry of aldehydes and ketones; McLafferty rearrangement
(9) Continued
(10) Continued
(11) Nucleophilic addition of thiols to aldehydes and ketones to form thioacetals; desulfurization of thioacetals with Raney nickel
(12) Continued

Category:

Education

Tags:

• organic
• chemistry
• aldehyde
• ketone
• nomenclature
• spectroscopy
• hydration
• nucleophilic
• addition
• water
• geminal
• diols
• reactivity
• acid
• base
• mass
• spectrometry
• McLafferty
• rearrangement
• thiols
• thioacetals
• desulfurization
• Raney
• nickel
• reaction
• mechanism

[wbxc90]

Since the acetone is in water labeled H2O(18), both of the hydroxy groups would end up with a O18 label because the hemiketal would continue to create the second labeled hydroxy group. The amount of unlabeled oxygen is negligible compared to the amount of labeled oxygen, thus the yield of a OH and a (18)OH is substantially lower than two (18)OH attached to the carbonyl carbon. Just saying.

Thanks for the videos though. They're a big help!