From benzopyranno-1-as-triazinones 1 and 2 , chloro, hydrazino and aminobenzopyranno-1-as-triazinehsa ve easily been prepared by transformation of the carbonyl function. These compounds lead to triazolo and imidazolobenzopyranno-1-as-triazines by reaction with acids or α-bromo...
The mechanism of these addition-elimination reactions is established from 4,5-disubstitued germadioxolanes. The reaction takes place under steric control. The consecutive elimination reaction proceeds by a mechanism of intramolecular nucleophilic substitution....
This method leads to products which present p K a values between 2,8 and 5,26 in accordance with theoretical values.doi:10.1002/macp.1993.021940416Chaabane BougheraraBernard BoutevinJean-Jaques RobinDie Makromolekulare Chemie
Gagnaire D, Taravel FR (1980) Biosynthe`se de cellulose bac- te´rienne a` partir de D-glucose uniforme´ment enrichi en 13C. Eur Biochem 103:133-143Gagnaire, D. Y. & Taravel, F. R. ( 1980 ) Biosynthèse de cellulose bactérienne à partir de d-glucose uniformément enrichi ...