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Lebrêne A, Martzel T, Gouriou L, Sanselme M, Levacher V, Oudeyer S, Afonso C, Loutelier-Bourhis C, Brière JF. The Catalytic Regio- and Stereoselective Synthesis of 1,6-Diazabicyclo[4.3.0]nonane-2,7-diones. J Org Chem 2021; 86:8600-8609. [PMID: 34125536 DOI: 10.1021/acs.joc.1c00252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A straightforward synthesis of original 1,6-diazabicyclo[4.3.0]nonane-2,7-diones was achieved through a DBU-organocatalyzed multicomponent Knoevenagel-aza-Michael-Cyclocondensation reaction which takes advantage of an unprecedented highly regio- and diastereoselective conjugate addition of pyridazinones to alkylidene Meldrum's acid intermediates. The key reactive intermediates of this complex process were analyzed by means of electrospray ionization mass spectrometry coupled to ion mobility spectrometry, allowing us to validate the proposed mechanism.
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Affiliation(s)
- Arthur Lebrêne
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA, 76000 Rouen, France
| | - Thomas Martzel
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA, 76000 Rouen, France
| | - Laura Gouriou
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA, 76000 Rouen, France
| | - Morgane Sanselme
- Laboratoire SMS - EA3233, Normandie Univ-University of Rouen, 76821 Mont Saint Aignan, France
| | - Vincent Levacher
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA, 76000 Rouen, France
| | - Sylvain Oudeyer
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA, 76000 Rouen, France
| | - Carlos Afonso
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA, 76000 Rouen, France
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Kolar P, Tišler M. Recent Advances in the Chemistry of Pyridazines. ADVANCES IN HETEROCYCLIC CHEMISTRY 1999. [DOI: 10.1016/s0065-2725(08)60985-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/13/2023]
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