35358-99-7Relevant academic research and scientific papers
ETUDE DE LA REACTIVITE DE L'ION AZOTURE VIS A VIS DE CATIONS HETEROCYCLIQUES-I; INHIBITION DE LA FORMATION D'AZIDES COVALENTS PAR UN COMPLEXE PYRYLIUM-AZOTURE CONSTITUANT UN "CUL DE SAC" REACTIONNEL. MISE EN EVIDENCE EXPERIMENTALE
Desbene, P.-L.,Cherton, J.-C.,Roux, J.-P. Le,Basselier, J.-J.
, p. 3539 - 3548 (2007/10/02)
The reactivity of azide anion with pyrylium and thiopyrylium substituted cations depends on the substitution of the heterocyclic cation.Only sterically hindered pyrylium or thiopyrylium cations lead to the formation of covalent azides.On the other hand, p
ETUDE DE LA REACTIVITE DE L'ION AZTURE VIS A VIS DE CATIONS HETEROCYCLIQUES-III REARRANGEMENTS THERMIQUES ET PHOTOCHIMIQUES DES AZIDES COVALENTS RESULTANT DE L'ION AZOTURE SUR DES CATIONS PYRYLIUM ET THIOPYRYLIUM DIVERSEMENT SUBSTITUES. NOUVEL ACCES A DES HETEROAZEPINES
Desbene, P.-L.,Cherton, J.-C.
, p. 3559 - 3565 (2007/10/02)
Azidopyrans rearrange at room temperature to 1,3-oxazepins but azidothiopyrans need heating to form unstable thiazepins. these intermediate thiazepins give the competitive formation of the corresponding pyridines after sulphur extrusion or of the corresponding thiophens after elimination of benzonitrile. Photochemical attempts to obtain thiazepins from azidothiopyrans were unsuccessful.
