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Enhanced nucleophilic reactivity: The “disappearing” lone-pair

✍ Scribed by J.D. Aubort; R.F. Hudson; R.O. Woodcock

Publisher
Elsevier Science
Year
1973
Tongue
French
Weight
219 KB
Volume
14
Category
Article
ISSN
0040-4039

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✦ Synopsis

In previous work1 we have advanced two explanations for the or-effect.

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## AM1 and PM3 computations show that thiocarbonyl S-oxide and thiocarbonyl S,S-Dioxide undergo Diels᎐Alder cycloadditions with cyclopentadiene and Ž . anthracene to form thiabicyclic adducts through asynchronous transition structures TSs with CϭS \* involving in the reaction at a very early stage