109967-16-0Relevant academic research and scientific papers
Thermal decomposition of annelated 1,5-tetrazoles with mono- and dibenzocycloalkane skeleton over HZSM-5 zeolite in flow-vacuum conditions
Pelmus, Marius,Popescu, Angela,Teodoru, Beatrice-Anamaria,Istrati, Daniela,Draghici, Constantin,Mihaiescu, Dan,Badea, Florin
, p. 965 - 970 (2013/09/23)
Monobenzo- and dibenzoannelated tetrazoloazocines 1-3 were thermally decomposed over HZSM-5 zeolite as catalyst, between 250 - 350 °C, in flow-vacuum conditions: 0.1 - 0.2 Torr, inert atmosphere (argon, flow rate 4 mL min-1) and glass tube. The reactions products were analyzed by GC/MS, separated by liquid chromatography and characterized by spectral methods: IR, 1H-, 13C- NMR, MS data. The main reaction products of 1 and 2 were the corresponding ring contracted N-cyanoderivatives (a new one, 7 and respectively 8) whereas the tetrazole 3 with central unsaturated ring affords 6H-indolo[2,3-6]quinoline (9). Ionic mechanisms explaining the formation of obtained reaction products are discussed in comparison with the same transformations over quartz as catalyst, in radical conditions, between 400 - 550 °C.
Flow-vacuum pyrolysis of polycyclic compounds. 27.1 pyrolysis of 8,9-dihydro-14h-tetrazolo[1,5a]dibenzo[c,f]azonine and 6,7,8,9-tetrahydro- tetrazolo[1,5a]benzo[c]azocine
Popescu, Angela,Andrei, Elena,Istrati, Daniela,Draghici, Constantin,Ciuculescu, Crinu
experimental part, p. 875 - 881 (2011/06/21)
The flow-vacuum pyrolysis (FVP) of 8,9-dihydro-14H-tetrazolo[1,5a] dibenzo[c,f]azonine (13) and 6,7,8,9-tetrahydrotetrazolo[ 1,5-a]benzo[c]azocine (14) in quartz tube, inert atmosphere, between 300-550°C in vacuum was investigated using GC/MS. The corresp
Heterocycles with annelated dibenzocycloalkane skeletons. VII1: Tetrazoles with eight- and nine-membered fused rings
Banciu, Mircea D.,Drǎghici, Constantin,Popescu, Angela,Banciu, Anca,Simion, Alina
, p. 649 - 660 (2007/10/03)
Some new tetrazoles annelated with benzo- and dibenzo-C8 and -C9 rings were synthesized using a modification of a recently described reaction of ketones with in situ generated triazidochlorosilane. The new compounds were characterized by their IR, 1H-NMR and 13C-NMR data. The reaction mechanism is discussed and proved by isolation of a stable diazidoderivative which was thermally converted to the corresponding tetrazole.
