Dimethyl dipropargylmalonate

Abstract

Geometric parameters of the title compound, C11H12O4, are in the normal ranges. The crystal packing is stabilized by two weak C—H⋯O hydrogen bonds.

(3S,6R)-3-Benzyloxymethyl-6-methyl-1,4-dioxane-2,5-dione

“…The lactide ring has a somewhat flattened twist-boat conformation, as is common for 3S,6R-substituted lactides (e.g. Bolte et al, 1994). The maximum deviation of the ring atoms from the least-squares plane through the lactide ring is 0.1402 (14) Å for O3.…”

(3S,6S)-3-Benzyloxymethyl-6-methyl-1,4-dioxane-2,5-dione

“…The lactide ring has a boat conformation, as is common for 3S,6S-substituted lactides (e.g. Bolte et al, 1994). All ring substituents are in the equatorial position.…”

Synthesis, Characterization and Evaluation of Antimicrobial and Antituberculosis Activities of New N‐(Substituted‐thioureido)aminobicyclo Dicarboximide and 3,4‐Disubstituted 1,2,4‐Triazolino‐5‐thione

“…All bond lengths are within normal ranges for this unit. 28,29 The dicarboximidonorbornene unit Fig in 6 has its typical boat conformation (endo configuration) 30 with the dihedral angle of 120.4(1)°between the dicarboximido fragment and the best-plane of norbornene C3/C4/C6/C7 atoms. In the norbornene skeleton the flapping angles of the five-membered envelope rings C3/C4/ C5/C6/C7 and C4/C5/C6/C8/C9 are 60.6(3)°and 51.6(3)°, respectively.…”