Synthesis of bis-(3,5)pyrazolophanes via double cycloadditive macrocyclisation |
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| Authors: | Giorgio Molteni Tullio PilatiAlessandro Ponti |
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| Institution: | a Università degli Studi di Milano, Dipartimento di Chimica Organica e Industriale, Via Golgi 19, 20133 Milano, Italy
b Consiglio Nazionale delle Ricerche, Istituto di Scienze e Tecnologie Molecolari, Via Golgi 19, 20133 Milano, Italy |
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| Abstract: | Double cycloadditive macrocyclisation of bis-hydrazonoyl chlorides 5 were performed with bis-allyl ethers 9 and 10, bis-vinyl ether 14 and bis-propargyl 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. |
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| Keywords: | 1 3-dipolar cycloadditions macrocycles pyrazoles bis-nitrilimines |
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