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An efficient copper-catalyzed method for the synthesis of tetrazolo[5,1-]isoquinolines has been developed starting from alkenyl-1,2-bis(boronates). The domino reaction underwent a Suzuki-Miyaura cross-coupling reaction and an azidation followed by an in situ [3 + 2] cycloaddition. Regioselective synthesis has been demonstrated by inverting the Suzuki-Miyaura cross-coupling reaction and the azidation.
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http://dx.doi.org/10.1021/acs.joc.4c00526 | DOI Listing |
J Org Chem
June 2024
Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, Rennes F-35000, France.
An efficient copper-catalyzed method for the synthesis of tetrazolo[5,1-]isoquinolines has been developed starting from alkenyl-1,2-bis(boronates). The domino reaction underwent a Suzuki-Miyaura cross-coupling reaction and an azidation followed by an in situ [3 + 2] cycloaddition. Regioselective synthesis has been demonstrated by inverting the Suzuki-Miyaura cross-coupling reaction and the azidation.
View Article and Find Full Text PDFBeilstein J Org Chem
April 2024
Department of Chemistry and Center for Green Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd, Boston, MA 02125, USA.
A new method for the synthesis of heterocyclic systems containing tetrazole and tetrahydroisoquinoline is developed via the performance of one-pot Ugi-azide and Heck cyclization reactions. The integration of the multicomponent and post-condensation reactions in one-pot maximizes the pot-, atom-, and step-economy (PASE).
View Article and Find Full Text PDFActa Crystallogr C Struct Chem
September 2019
Department of Chemistry and Biochemistry, Berry College, Mount Berry, GA 30149-5036, USA.
Tetrahydrotetrazoles are five-membered-ring heterocycles containing four contiguous saturated nitrogen atoms. Very few examples of such compounds have been reported in the literature. Our previous attempt at the synthesis of a member of this class of compound suggested that the N-N bonds may be more labile than expected.
View Article and Find Full Text PDFFarmaco
March 1990
Laboratoire de Chimie Therapeutique, Faculté de Pharmacie, Clermont-Ferrand, France.
A series of 6,8-diaryl-1,2,4-triazolo[4,3-b] and 1,2,3,4-tetrazolo[1,5-b]pyridazines was synthesized from suitable chloropyridazines. The compounds were screened in mice for their ability to antagonize maximal electroshock-, pentylenetetrazole- and bicuculline-induced seizures; sedative effects were evaluated by a study of the spontaneous motor activity. Some of pyridazine derivatives exhibited appreciable anticonvulsant activity.
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