Abstract The objective of this work was to develop a chemical admixture make concrete capable heal its fissures autonomously and, consequently, mitigate the concrete’s reinforcement corrosion due ingress aggressive agents. For that, polymeric microcapsules built by shell urea-formaldehyde-melamine (UFM) and core methylmethacrylate were developed added further evaluation. specimens containing 0%...

1-(Acridin-9-yl)-3-disubstituted thioureas react with methyl bromoacetate and bromoacetonitrile, respectively, depending on a substituent bulkiness, to polyfunctionally substituted (acridin9-yl)imino-1,3-thiazolidin-4-ones and spiro[9,10-dihydroacridine-9,4-thiazolidines]. Reactions represent the simple and convenient way to synthesize the title compounds with possible antibacterial activity. B...

All the non-hydrogen atoms except one methyl C atom of the title compound, C(13)H(15)NO(3), lie on a crystallographic mirror plane perpendicular to the b axis. The crystal packing is stabilized by two weak inter-molecular C-H⋯O hydrogen bonds.

The title compound, C(12)H(17)NO(4), features an almost planar mol-ecule (r.m.s. deviation for all non-H atoms = 0.070 Å). All methyl-ene C-C bonds adopt an anti-periplanar conformation. In the crystal structure the mol-ecules lie in planes parallel to (12) and the packing is stabilized by O-H⋯O hydrogen bonds.

In the title compound, C(8)H(7)N(3)O(2), the mol-ecular skeleton is almost planar with a maximum deviation of 0.0484 (9) Å for the methyl C atom. In the crystal, weak inter-molecular C-H⋯N and C-H⋯O hydrogen bonds help to establish the packing.