نتایج جستجو برای: cyclo condensation

تعداد نتایج: 36811  

Journal: :New Journal of Chemistry 2022

Two series of regio-isomeric mesomorphous, luminescent and conductive compounds, based on a ditriphenylenothiophene core (α/β-DTPT), were successfully synthesized by the Suzuki–Miyaura cross-coupling/Scholl cyclo-dehydrogenation reactions tandem.

2011
Martin Huth

We develop a bioadhesive coating based on a synthetic peptide-conjugate (AK-cyclo[RGDfC])which contains multiples of the arginyl-glycyl-aspartic acid (RGD) amino acid sequence.Biotinated AK-cyclo[RGDfC] is bound to a supported lipid bilayer via a streptavidin inter-layer. Layering, hydration and packing of the coating is quantified by x-ray and neutronreflectometry experimen...

2009
Jacqui E. Hoffman Henry Cheng Arnold L. Rheingold Antonio DiPasquale Alex Yanovsky

The title compound, C(12)H(19)BrN(4)O, represents the minor component of the two products obtained in a series of transformations involving the Grignard reaction of tert-butoxy-carbonyl-protected 4-amino-cyclo-hexa-none with MeMgBr, and subsequent inter-action of the obtained amino-substituted cyclo-hexa-nol with 4-chloro-6-methyl-pyrimidin-2-amine followed by bromination with N-bromo-succinimi...

2008
Wan-Li Chen Guo-Sheng Chen Ying-Hong Zhu Wei-Min Mo

The title compound, C(11)H(10)Cl(2), is a useful inter-mediate for the synthesis of 1H-cyclo-propa[b]naphthalene. Strain in the mol-ecule is evidenced by the fact that the cyclo-hexane ring is essentially planar and nearly coplanar with the benzene ring [dihedral angle 1.87 (18)°], and the cyclo-propyl ring is almost perpendicular to the cyclo-hexane ring [dihedral angle 70.99 (12)°]. The mol-e...

2013
Muhammad Sohail Wang Yao-Feng Wang Qi Fu-Xue Chen

The title compound, C20H21IO, was synthesized by cyclo-haloetherification of 2-(cyclo-hex-2-en-yl)-2,2-diphenyl-ethanol in CH2Cl2, and crystallized with two independent mol-ecules in the asymmetric unit. The six-membered cyclo-hexane ring adopts a chair conformation, while the five-membered ring adopts an envelope conformation with the fused C atom opposite the O atom as the flap in each case [...

Journal: :Acta crystallographica. Section E, Crystallographic communications 2015
J M Joseph Vijayan Viswanathan Devadasan Velmurugan

In the title compound, C34H25ClN2O2, the fused pyrrolidine ring adopts an envelope conformation with the N atom as the flap. The two adjacent cyclo-pentane rings also adopt envelope conformations. The mean plane of the pyrrolidine ring makes dihedral angles of 40.53 (10) and 80.23 (10)° with the mean planes of the cyclo-pentane rings. The dihedral angle between the mean planes of the cyclo-pent...

2008
Vincent O. Nyamori Muhammad D. Bala

In the title compound, [Fe(C(5)H(5))(C(11)H(8)Br)], the distance of the Fe atom from the centroids of the unsubstituted and substituted cyclo-penta-dienyl (Cp) rings is 1.644 (1) and 1.643 (1) Å, respectively. The ferrocenyl moiety deviates from an eclipsed geometry, with marginally tilted Cp rings and an inter-planar angle between the Cp and benzene rings of 13.0 (4)°. The crystal structure is...

2014
Uldis Peipiņš Niks Freimanis Dmitrijs Stepanovs Anatoly Mishnev Māris Turks

The title compound, C44H62O6S2 {systematic name: (1R,3aS,5aR,5bR,7aR,9S,11aR,11bR,13aR,13bR)-5a,5b,8,8,11a-penta-methyl-1-(prop-1-en-2-yl)-3a-[(tos-yloxy)meth-yl]icosa-hydro-1H-cyclo-penta-[a]chrysen-9-yl 4-methyl-benzene-sulfonate}, was obtained by tosyl-ation of naturally occurring betulin. All the cyclo-hexane rings adopt chair conformations and the cyclo-pentane ring adopts a twisted envelo...

2013
Aike Meier zu Greffen Darius P. Kranz Jörg-M. Neudörfl Hans-Günther Schmalz

In the title compound, C(23)H(34)O(4), the C/D and D/E rings are trans fused and the A/B ring possesses an anti fusion. The two cyclo-hexane rings adopt a chair conformation while the cyclo-hexene ring exhibits a half-chair conformation. The cyclo-pentane ring displays an envelope conformation with the C atom bearing the methyl group as the flap. In the crystal, the mol-ecules are linked by O-H...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید