Konfigurations??und konformationsisomere antiaromatische [28] Tetraoxaporphyrinoide (4.2. 4.2) und aromatische [26] Tetraoxaporphyrin (4.2. 4.2)??dikationen. Eine …

…, J Stiegler, P Kreitmeier, T Burgemeister…

Index: Maerkl, Gottfried; Stiegler, Juergen; Kreitmeier, Peter; Burgemeister, Thomas; Kastner, Fritz; Dove, Stefan Helvetica Chimica Acta, 1997 , vol. 80, # l p. 14 - 42

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Citation Number: 13

Abstract

The [28] tetraoxaporphyrinoids (4.2. 4.2) 6 are synthesized by cyclizing Wirzig reaction of (E, E)-5, 5'-(buta-1, 3-diene-1, 4-diyl) bis [furan-2-carbaldehyde](8) with (E, E)-{(buta-l, 3-diene- diyl) bis [(furan-5, 2-diyl) methylene]) bis-[triphenylphosphonium] dibromide (9) and 3, 3'- {[(E)-ethene-1, 2-diyl] bis (furan-5, 2-diyl)) bis [(E)-prop-2-enal](22) with (E)-{(ethene-1, 2- diyl) bis [(furan-5, 2-diyl) methylene]} bis [triphenylphosphonium] dibromide (23). An ...

Copper??Catalyzed Synthesis of Alkylphosphonates from H??Phosphonates and N??Tosylhydrazones

[Miao, Wenjun; Gao, Yuzhen; Li, Xueqin; Gao, Yuxing; Tang, Guo; Zhao, Yufen Advanced Synthesis and Catalysis, 2012 , vol. 354, # 14-15 p. 2659 - 2664]

Synthesis of Diethyl Arylmethanephosphonates from Arylmethanamines

[Fresneda, P.M.; Molina, P. Synthesis, 1981 , # 3 p. 222 - 223]

Synthesis and intramolecular cyclization of diethylphosphono-substituted allenic glycols

[Brel Synthesis, 2001 , # 10 p. 1539 - 1545]