A concise synthesis of 3-(1-alkenyl)isoindolin-1-ones and 5-(1-alkenyl)pyrrol-2-ones has been achieved by the coupling reactions of N-acyliminium ions produced from 3-hydroxyisoindol-1-ones or 5-hydroxy-1-pyrrol-2-ones with unactivated olefins in the presence of BF(3)·OEt(2) at room temperature. For most of the olefins, the reactions afforded the C(sp3)-C(sp2) cross-coupling products, but for t...

In the xanthenone system of the title compound, C23H20O4, the pyran ring has a maximum deviation of 0.111 (1) Å from planarity and the outer cyclo-hexene ring exhibits a puckered conformation. The three methyl-ene C atoms of the cyclo-hexene ring bonded to the pyran unit are disordered over two sets of sites [occupancies = 0.570 (3) and 0.430 (3)]. In the crystal, mol-ecules are linked by C-H⋯O...

In the title compound, C(28)H(33)NO(4)·CH(2)Cl(2), the pyrrolidone ring adopts a twisted envelope conformation and the cyclo-hexene has a half-chair conformation. In the crystal, weak C-H⋯O hydrogen bonds link the components into chains along [100].

This paper presents the results of a study process hydrogenation 1-hexene in ethanol and phenylacetylene hexanewater suspension over multicomponent nickel skeleton catalysts It was demonstrated that activity is substantially dependent on nature additives introduced into bearing alloy. Introduction Cu, Pb Ta leads to an increase (W=196-295cm 3 /min-gNi). The major mechanism effect emulsion compo...

Abstract A dynamic model is developed for gas‐phase ethylene/1‐hexene polymerization with a three‐site hafnocene catalyst. The accurately predicts molecular weight and comonomer composition distributions 15 lab‐scale copolymerization runs performed at different temperatures. experimental used to fit this are temperatures between 60 85 °C. Gas‐phase concentrations measured every 2.7 min througho...

In the title compound, C20H18ClN3O3, the five- and six-membered heterocycles fused through a spiro C atom are inclined to each other at an angle of 87.4 (1)°. In the tricyclic ring system, the cyclo-hexene ring adopts an envelope conformation with the spiro atom as the flap. In the crystal, two sets of N-H⋯O hydrogen bonds link the mol-ecules into columns containing centrosymmetric R 2 (2)(7) r...

In the title compound, C16H17ClO, the cyclo-hexene ring adopts a half-chair conformation and the best plane through the six ring atoms makes a dihedral angle of 6.69 (7)° with the chlorophenyl ring. In the crystal, pairs of C-H⋯O hydrogen bonds link the mol-ecules into centrosymmetric R 2 (2)(20) dimers. The dimers are linked into an infinite chains along the b-axis direction by further C-H⋯O h...

In the xanthene ring system of the title compound, C(23)H(25)BrO(4), the 4H-pyran ring is almost planar [maximum deviation = 0.040 (3) Å] and the cyclo-hexene ring adopts a sofa conformation. The cyclo-hexene ring attached to the xanthene system is puckered [Q(T) = 0.427 (3) Å, θ = 55.0 (4) ° and ϕ = 164.4 (6) °]. In the crystal, mol-ecules are linked to each other by O-H⋯O and C-H⋯O hydrogen b...

The asymmetric unit of the title compound, C(14)H(16)ClNO, contains two independent mol-ecules, both with the cyclo-hexene ring in a sofa conformation. In the crystal, N-H⋯O hydrogen bonds link the mol-ecules related by translation along the a axis into two crystallographically independent chains. Weak C-H⋯π inter-actions are also observed.