(6S,7S,8S,8aS)-6-Ethyl-7,8-dihy­droxy-1,5,6,7,8,8a-hexa­hydro­indolizin-3(2H)-one monohydrate

The absolute configuration of the title compound, C10H17NO3·H2O, was assigned from the synthesis. In the mol­ecular structure, the central six-membered ring of the indolizine moiety adopts a chair conformation, with two atoms displaced by −0.578 (2) and 0.651 (1) Å from the plane of the other four atoms [maximum deviation 0.019 (2) Å] The conformation of the fused oxopyrrolidine ring is close to that of a flat envelope, with the flap atom displaced by 0.294 (1) Å from the plane through the remaining four atoms. In the crystal, one of the hy­droxy groups is hydrogen-bonded to two water mol­ecules, while the other hy­droxy group exhibits an inter­molecular hydrogen bond to the carbonyl O atom, resulting in a chain parallel to the b axis

(7R,8S,8aS)-8-Hydr­oxy-7-phenyl­perhydro­indolizin-3-one

In the title compound, C14H17NO2, the six-membered ring of the indolizine system adopts a chair conformation. In the crystal, mol­ecules form chains parallel to the b axis via inter­molecular O—H⋯O hydrogen bonds. The absolute mol­ecular configuration was assigned from the synthesis

(8aRS)-8,8a-Dihydro­furo[3,2-f]indolizine-6,9(4H,7H)-dione

The title compound, C10H9NO3, is a chiral mol­ecule with one stereogenic carbon atom, but which crystallizes as a racemate in the centrosymmetric space group P21/n. The central six-membered ring of the indolizine moiety adopts a definite envelope conformation, while the conformation of the oxopyrrolidine ring is close to that of a flat-envelope with a maximum deviation of 0.352 (1) Å for the flap atom

(11R,11aS)-11-Hydr­oxy-1,5,11,11a-tetra­hydro-1-benzothieno[2,3-f]indolizin-3(2H)-one

The absolute configuration of the title compound, C14H13NO2S, was assigned from the synthesis and confirmed by the structure determination. The central six-membered ring of the indolizine system adopts an envelope conformation, the greatest deviation from the mean plane of the ring being 0.459 (2) Å for the N atom. The benzothieno system is planar [mean deviation = 0.009 (2) Å]. In the crystal structure, mol­ecules form chains parallel to the b axis via inter­molecular O—H⋯O hydrogen bonds

(8aS)-7,8,8a,9-Tetra­hydro­thieno[3,2-f]indolizin-6(4H)-one

In the mol­ecular structure of the title compound, C10H11NOS, the central six-membered ring of the indolizine unit adopts an envelope conformation, the maximum deviations from the mean plane of the ring being 0.533 (2) Å. The fused thieno ring is nearly coplanar [mean deviation = 0.007 (2) Å]. The conformation of the fused oxopyrrolidine ring is close to that of a flat-envelope, with a maximum deviation of 0.339 (3) Å. The crystal structure is stabilized by C—H⋯O hydrogen bonds

Manufacturing technology of composite materials-principles of modification of polymer composite materials technology based on polytetrafluoroethylene

The results of the investigations into the technological formation of new wear-resistant polymer composites based on polytetrafluoroethylene (PTFE) filled with disperse synthetic and natural compounds are presented. The efficiency of using PTFE composites reinforced with carbon fibers depends on many factors, which influence the significant improvement of physicomechanical characteristics. The results of this research allow stating that interfacial and surface phenomena of the polymer-solid interface and composition play a decisive role in PTFE composites properties. Fillers hinder the relative movement of the PTFE molecules past one another and, in this way, reduce creep or deformation of the parts, reducing the wear rate of parts used in dynamic applications as well as the coefficient of thermal expansion. The necessary structural parameters of such polymer composites are provided by regimes of process equipment.Web of Science104art. no. 37

(4R,6S,7S,8S,8aS)-6-Ethyl-7,8-dihy­droxy-4-methyl-1,2,3,5,6,7,8,8a-octa­hydro­indolizin-4-ium iodide

The title compound, C11H22NO2 +·I−, is a chiral mol­ecule with five stereogenic centres. The absolute configuration was assigned from the synthesis and confirmed by the structure determination. The central six-membered ring of the indolizine system adopts a chair conformation, with two atoms displaced by −0.690 (2) and 0.550 (2) Å from the plane of the other four atoms. The conformation of the pyrrolidine ring is close to that of an envelope, with the flap atom displaced by 0.563 (2) Å from the plane of the remaining four atoms. In the crystal, there are two O—H⋯I hydrogen bonds

EC Regulation No. 44/2001 on Jurisdiction, Recognition and Enforcement of Judgments in Civil and Commercial Matters

Jednotný vnitřní trh, který se začátkem 90. let vydal cestou Maastrichtské smlouvy vystřídal režim společného trhu, představuje čtyři základní svobody, kterými jsou volný pohyb zboží, osob, služeb a kapitálu. Zahrnuje území celé Evropské unie, v které se neuplatňují hranice mezi jednotlivými členskými státy. Nařízení 44/2001 "Brusel I" zabezpečuje jednotný přístup k soudům členských států bez ohledu na státní příslušnost osob

Nařízení ES o soudní příslušnosti, uznání a výkonu soudních rozhodnutí v civilních a obchodních věcech č. 44/2001

Jednotný vnitřní trh, který se začátkem 90. let vydal cestou Maastrichtské smlouvy vystřídal režim společného trhu, představuje čtyři základní svobody, kterými jsou volný pohyb zboží, osob, služeb a kapitálu. Zahrnuje území celé Evropské unie, v které se neuplatňují hranice mezi jednotlivými členskými státy. Nařízení 44/2001 "Brusel I" zabezpečuje jednotný přístup k soudům členských států bez ohledu na státní příslušnost osob.Katedra obchodního právaDepartment of Business LawPrávnická fakultaFaculty of La