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The reactivity of 2,2-dimethyl-5-methoxyindan-1-ol (1) and 2,2-dimethyl-6-methoxytetral-1-ol (2) radical cations has been studied both in acidic and basic solution. At pH≤4 both 1+ and 2+ undergo Cα---H deprotonation as the exclusive reaction with k=4.6×104 and 3.2×104 s−1, respectively. In basic solution 1+ and 2+ behave as oxygen acids undergoing −OH-induced α---OH deprotonation in a diffusion controlled process (k−OH≈1010M−1 s−1). An intermediate alkoxyl radical is formed which undergoes a 1,2-hydrogen atom shift in competition with C---C β-scission (with 1+) or as the exclusive pathway (with 2+). A behavior which is interpreted in terms of the greater ease of ring-opening of a five membered ring as compared to a six-membered one.
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∙ 13y ago
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How many oxygens are in a pentoxide?
5
What is oxygens density?
Liquid density at boiling point (90 K) is 1.141 g·cm−3
What is an acidity function?
An acidity function is the relationship between the acidity of a solution and the concentration of its solute.
What is oxygens weight?
the atomic weight is 15.9994
What is oxygens period?
Oxygen is in the second period.
What is oxygens charge?
2-
What is oxygens oder?
it has no oder .
What is oxygens atomic number?
Oxygen is in p block. it is a useful gas. oxygens atomic number is 8.
What is oxygens element?
O2
What is oxygens state?
Colourless gas
What is oxygens natural state?
a gas
How many oxygens are in a pentoxide?
5
What is oxygens density?
Liquid density at boiling point (90 K) is 1.141 g·cm−3
What is an acidity function?
An acidity function is the relationship between the acidity of a solution and the concentration of its solute.
What is acidity function?
An acidity function is the relationship between the acidity of a solution and the concentration of its solute.
How many oxygens are in a molecule of water?
One.
What does 3 mean in Al2o3?
There are 3 oxygens
