Double cycloadditive macrocyclisation of bis-hydrazonoyl chlorides 5 were performed with bis-allyl ethers 9 and 10, bis-vinyl ether 14 and bis-proparayl ether 18. The title compounds having a 18-, 19-, 22- or 24- membered ring annulated to the pyrazole units were obtained with good overall yield. (C) 2003 Elsevier Ltd. All rights reserved.
Synthesis of bis-(3,5)pyrazolophanes via double cycloadditive macrocyclisation / G. Molteni, T. Pilati, A. Ponti. - In: TETRAHEDRON. - ISSN 0040-4020. - 59:47(2003), pp. 9315-9322.
Synthesis of bis-(3,5)pyrazolophanes via double cycloadditive macrocyclisation
G. Molteni;
2003
Abstract
Double cycloadditive macrocyclisation of bis-hydrazonoyl chlorides 5 were performed with bis-allyl ethers 9 and 10, bis-vinyl ether 14 and bis-proparayl ether 18. The title compounds having a 18-, 19-, 22- or 24- membered ring annulated to the pyrazole units were obtained with good overall yield. (C) 2003 Elsevier Ltd. All rights reserved.
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