Tetrahedron

5, 16-Dialkyl (diaryl)-5, 16-dihydro-5, 16-diphospha-tetraepoxy [22] annulene (2.1. 2.1)

G Märkl, J Amrhein, T Stoiber, U Striebl, P Kreitmeier

Index: Maerkl, Gottfried; Amrhein, Juergen; Stoiber, Thomas; Striebl, Ulrich; Kreitmeier, Peter Tetrahedron, 2002 , vol. 58, # 13 p. 2551 - 2567

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Citation Number: 10

Abstract

Several 5, 16-dialkyl (diaryl)-5, 16-dihydro-5, 16-diphospha-tetraepoxy [22] annulenes (2.1. 2.1) 9 as possible precursors of aromatic 5, 16-diphospha-tetraepoxy [22] annulenes (2.1. 2.1) 8 are synthesized by cyclizing Wittig-reactions of the phosphane dialdehydes 15 with the bis-ylids of the phosphane-bisphosphoniumsalts 19.