... Abstract. Acylsulfonamide dianions function as efficient synthetic intermediates and are especially suitable for Doubly Unsymmetrical Çarbanion Oxidation. Download full text in PDF. Tetrahedron Letters, Vol.27, No.2, op 131-134, 1986 0040-4039/86 $3.00 + .00 Printed in Great Britain 01986 Pergamon Press Ltd. OXIDATIVE COUPLING. HI. ... References. 1. JL Belletire, EG Spletzer, AR Pinhas. Tetrahedron Lett., 25 (1984), p. 5969. 2. EC Ashby, JN Argyropoulos. ...