Regioselective synthetic approaches towards 1,2,8,9-tetraazadispiro[4.1.4.3]tetradeca-2,9-dien-6-ones
1,3-Dipolar cycloaddition of 2,6-bis(arylmethylidene)cyclohexanones 1 to a variety of nitrilimines (generated in situ by triethylamine dehydrohalogenation of the corresponding hydrazonoyl chlorides 2) proceeded regioselectively affording 1,3,4,8,10,11-hexaaryl-1,2,8,9-tetraazadispiro[4.1.4.3]tetrade...
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Published in | Tetrahedron Vol. 57; no. 10; pp. 2015 - 2019 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
OXFORD
Elsevier
03.03.2001
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Subjects | |
Online Access | Get full text |
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Summary: | 1,3-Dipolar cycloaddition of 2,6-bis(arylmethylidene)cyclohexanones 1 to a variety of nitrilimines (generated in situ by triethylamine dehydrohalogenation of the corresponding hydrazonoyl chlorides 2) proceeded regioselectively affording 1,3,4,8,10,11-hexaaryl-1,2,8,9-tetraazadispiro[4.1.4.3]tetradeca-2,9-dien-6-ones as a mixture of two isomers 3 and 4. The structures of which were established by different spectroscopic techniques as well as single crystal X-ray diffraction. (C) 2001 Elsevier Science Ltd. All rights reserved. |
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ISSN: | 0040-4020 |
DOI: | 10.1016/S0040-4020(01)00020-5 |