We report on the synthesis of a series poly(ester-anhydride) composed following dicarboxylic acids: adipic, suberic, sebacic, dodecanedioic acids; and hydroxyalkanoic ricinoleic 12-hydroxystearic acid with control molecular weight approaching from new method in which well-defined ester monomers are first synthesized by stepwise addition acids molecules into melted acids. The key advantage this ...

this study represents a highly efficient and regioselective ring-opening of epoxides with acetic anhydride in the presence of naoac·3h2o at solvent-free conditions. the ring-opening of different classes of epoxides were carried in oil bath (70-80 °c) to afford 1,2-diacetates in high to excellent yields

From the treatment of 5-hydroxy-1,4-naphthoquinone (juglone) with acetic anhydride and H2SO4 followed subsequently by treatment with methanolic HCl, 5-hydroxy-3-methoxy-1,4-naphthoquinone (3-methoxy juglone) and 8-hydroxy-4-methoxy-1,2-naphthoquinone were obtained as products rather than the anticipated product 2,5-dihydroxy-1,4-naphthoquinone (2-hydroxy juglone). The reaction and the identific...

The title compound, C(19)H(18)Cl(2)N(2)O(5), was synthesized by the reaction of N'-(3,4-dichloro-benzyl-idene)-3,4,5-trimethoxy-benzo-hydrazide and acetic anhydride. The oxadiazole ring makes dihedral angles of 82.82 (7) and 9.92 (7)° with the 3,4-dichloro-benzene and the 3,4,5-trimethoxy-benzene ring planes, respectively. The crystal structure is stabilized by inter-molecular C-H⋯ O and C-H⋯ N...