The crystal structure of the title compound, C14H22O3, consists of independent molecules in each of which three six-membered rings and a five-membered ring are fused together. All the six-membered rings display chair conformations, while the five-membered ring has an envelope conformation. The molecular dimensions are normal with mean bond distances C-sp3-C-sp3 1.523(10) and C-sp3-O 1.44(2) Angstrom. Pairs of molecules lying about inversion centers are linked by O-H ... O hydrogen bonds [O ... O 2.806 (3) Angstrom].
Synthesis of pyrimidinethiones and spiropyrans proceeding from Mannich ketones
作者:M. P. Shchekina、R. S. Tumskii、I. N. Klochkova、A. A. Anis’kov
DOI:10.1134/s107042801702021x
日期:2017.2
β-aminoketones were revealed consisting in heterocyclization reactions with the formation of spirochromenes and hydropyrimidinethiones. Alicyclic conjugated Mannich bases under conditions of basic catalysis suffer deamination followed by [4+2]-cycloaddition leading to the stereo- and regiodirected formation of difficultly available spirochromene derivatives. Three-component condensation of acyclic and alicyclic
作者:M. Parvez、N. Sultana、T. B. Sarfaraz、S. A. Husain
DOI:10.1107/s0108270198003849
日期:1998.9.15
The crystal structure of the title compound, C14H22O3, consists of independent molecules in each of which three six-membered rings and a five-membered ring are fused together. All the six-membered rings display chair conformations, while the five-membered ring has an envelope conformation. The molecular dimensions are normal with mean bond distances C-sp3-C-sp3 1.523(10) and C-sp3-O 1.44(2) Angstrom. Pairs of molecules lying about inversion centers are linked by O-H ... O hydrogen bonds [O ... O 2.806 (3) Angstrom].