444313-01-3Relevant academic research and scientific papers
5,16-Dialkyl(diaryl)-5,16-dihydro-5,16-diphospha-tetraepoxy[22]annulene (2.1.2.1)
M?rkl, Gottfried,Amrhein, Jürgen,Stoiber, Thomas,Striebl, Ulrich,Kreitmeier, Peter
, p. 2551 - 2567 (2007/10/03)
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.
