1,1-DIANIONS OF ALKYL PHENYL SULPHONES AS SYNTHETIC INTERMEDIATES IN CYCLIZATION REACTIONS |
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| Authors: | D Savoia C Trombini A Umani-ronchi |
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| Institution: | Istituto Chimico G. Ciamician, Università di Bologna , Bologna, Italy |
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| Abstract: | Abstract α-Sulphonyl carbanions are known to be good nucleophiles both in intermolecular and in intramolecular reactions1. In the same way gem-dimetalloderivatives of alkyl phenyl sulphones I a,b readily add to aldehydes and ketones to give the (β-hydroxy compounds II in the case of dilithioderivatives Ia, while from dimagnesioderivatives Ib α, β-unsaturated sulphones III are also obtained2. |
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