An expeditious one-pot synthesis of 5-substituted tetronic acids from aldehydes and terminal conjugated alkyne as starting materials is described. The entire process embodies two consecutive chemical events: a catalytic domino reaction to build the 1,3-dioxolane scaffolds 5 and a two-step acid-catalyzed trans-acetalization-lactonization reaction to furnish the tetronic acid derivatives 6.

The search of new renewable fuels and the interest finding uses for abundant subproducts many industrial processes have prompt Eni S.p.A to develop a technology producing biofuels from glycerol. One compounds involved in this process is 2-ethyl-4-ethoxymethyl-1,3‑dioxolane (PrEDO). In paper their temperature - vapor pressure curve has been determined experimentally as well binary vapor–liquid e...

The title compound, C(22)H(20)Cl(8)O(4), was prepared as part of the synthesis of precursors for the preparation of fluorinated mol-ecular tweezers. The mol-ecule sits on an inversion center, thus requiring that the cyclo-octane ring adopt a chair conformation.

The structures of lithium 4-fluoro-, 4-chloro, 2and 4-bromo-, 4-(trifluoromethy1)-, 4-methoxy-, 2-methyl-, 2-ethyl-, 2-n-propyl-, 2-isopropyl-, 2-tert-butyl-, 2-(methoxymethyl), 3,5-dimethyl-, 3,5-dimethyl-4-methoxy-, 4-chloro-3,5-dimethyI-, 3,5-diethyl-, and 3,5-dimethoxyphenolates in solution in weakly polar, aprotic solvents such as pyridine, tetrahydrofuran, dimethoxyethane, 1,3-dioxolane, ...

The title compound, C(10)H(8)ClNO(3), is a significant anti-convulsant agent. The indolinone system is essentially planar, the dihedral angle between the rings being 2.24 (8)°. The dioxolane ring adopts an envelope conformation; the dihedral angle between the plane through its four coplanar atoms and the indolinone system is 89.8 (1)°. The crystal structure is stabilized by a three-dimensional ...

In the title compound, C18H22O4, the cyclo-hexane and cyclo-hexa-none rings adopt normal chair and half-chair conformations, respectively. The dioxolane ring is almost planar, with an r.m.s. deviation of 0.094 (3) Å. In the crystal, mol-ecules are connected by O-H⋯O hydrogen bonds, forming 21 helical chains along the a-axis direction. The chains are further connected by C-H⋯O hydrogen bonds.