Screening of simple carbohydrates as a renewable organocatalyst for the efficient construction of 1,3-benzoxazine scaffold

Synthesis, Characterization and Theoretical Calculation of 4-(((1h-Imidazol-2-Yl)methylene)amino)phenol

“…With this program, pKa values of nitrogen in the imidazole ring (CH = N), nitrogen in the imine group (CH = N), nitrogen-bound hydrogen in the imidazole ring (N-H), and oxygen-bound hydrogen in the phenol structure (O-H) were calculated. In the calculation, Mode: macro, Acid / base prefix: dynamic, Min basic pKa: -2, Max acidic pKa: 16 and Temperatura (K): 298 were selected [31]. The stacked pKa results are given in Table 7.…”

Mild and efficient regioselective surfactant catalyzed deacylation of lipophilic 5‐substituted 4‐acyl‐2‐(acylamino)‐Δ2‐1,3,4‐thiadiazolines

“…Moreover, surfactant-catalyzed reactions carried out in aqueous medium or in organic solvents including water phase still maintain their popularity. As a part of our continual work toward the progress of sustainable methods for preparation of valuable compounds with various heterocyclic ring systems [25][26][27][28][29][30][31], we wish to report here a sustainable protocol toward biologically active compounds. In the literature, terpenone and carbohydrate based some natural carbonyl compounds were chosen as starting materials, and chiral Δ 2 -1,3,4-thiadiazoline derivatives with biological activity were synthesized and some mechanistic approaches were discussed [32][33][34][35][36][37][38][39][40].…”