نتایج جستجو برای: eight membered rings

تعداد نتایج: 228395  

2012
Abdullah M. Asiri Mohie E. M. Zayed Seik Weng Ng Edward R. T. Tiekink

In the title indolin-2-one derivative, C(15)H(11)NO, the phenyl ring and the oxoindoline fused-ring system (r.m.s. deviation = 0.011 Å) are aligned at 48.52 (6)°. In the crystal, inversion-related mol-ecules form an N-H⋯O hydrogen-bonded dimer via an eight-membered {⋯HNCO}(2) synthon. The dimeric aggregates are linked into a three-dimensional architecture via C-H⋯O and π-π inter-actions between...

2009
Samir A. Carvalho Larisse O. de Feitosa Edson F. da Silva Edward R. T. Tiekink James L. Wardell Solange M. S. V. Wardell

In the title mol-ecule, C(9)H(8)N(4)O(2)S, the dihedral angle between the thia-diazole and benzene rings is 73.92 (8)° and the thia-diazole group S atom is orientated towards the benzene ring, the central S-C-C-C torsion angle being 45.44 (18)°. In the crystal, supra-molecular tapes mediated by N-H⋯N hydrogen bonds and comprising alternating eight-membered {⋯HNCN}(2) and 10-membered {⋯HNH⋯NN}(2...

2011
Zhi-Jun Song Wei-Quan Chen Xiao-Ying Du Yun-Fei Yuan Han-Hong Xu

The title compound, C(26)H(39)NO(7), which was isolated from Delphinium anthriscifolium var. majus, has a lycoctonine carbon skeleton containing four six-membered rings (A, B, D and E) and three five-membered rings (C, F and G). Rings A, B and E adopt chair conformation, while ring D adopts a boat conformation. Rings C and F adopt envelope conformations.

2009
Hoong-Kun Fun Wei-Ching Liew Sankappa Rai Prakash Shetty Arun M. Isloor

The title compound, C(12)H(19)IO(5), is the ortho-rhom-bic polymorph of a previously reported monoclinic form [Krajewski et al. (1987 ▶). Bull. Pol. Acad. Sci. Chem.35, 91-102]. The dihedral angles between the six-membered ring and the two five-membered rings are 67.66 (14) and 71.79 (13)°, whereas the dihedral angle between the five-membered rings is 74.41 (12)°, indicating that all three ring...

2014
Jens M. Breunig Hans-Wolfram Lerner Jan W. Bats

The asymmetric unit of the title compound, [Fe(C5H5)(C5H4BrHg)], contains two independent mol-ecules, A and B, in which the Hg-C bond lengths are 2.045 (6) and 2.046 (6) Å, the Hg-Br bond lengths are 2.4511 (9) and 2.4562 (7) Å, and the C-Hg-Br angles are 176.42 (17) and 177.32 (17)°. The two cyclo-penta-dienyl rings of mol-ecule A are eclipsed, while those of mol-ecule B are almost staggered. ...

Journal: :The Journal of organic chemistry 2006
Larry E Overman Emile J Velthuisen

Using a B-alkyl Suzuki cross-coupling as a key step, a concise and stereocontrolled synthesis of five- to eight-membered triisopropylsiloxy ethers having (2Z)-(6,6-dimethoxyhexylidene) or (2Z)-(5,5-dimethoxypentylidene) side chains was developed. Prins-pinacol reactions of these precursors promoted by SnCl4 provide bicyclic products in which 5-, 6-, or 7-membered rings are joined by a C-C singl...

2008
Hiromi Ohi Mayumi Shimizu Makoto Obata Takuzo Funabiki Shigenobu Yano

The title compound, {[Ag(L)]PF(6))(n) {L is tris-[2-(4-phenyl-1,2,3-triazol-1-yl)eth-yl]amine, C(30)H(30)N(10)}, consists of alternating two-dimensional cationic layers of [Ag(L)](+) and anionic PF(6) (-) layers. Each Ag(I) atom is three coordinated in a T-shaped geometry by three N atoms from three ligands. Each ligand links three Ag(I) atoms, generating a two-dimensional network structure wit...

2010
Flavien A. A. Toze Julya D. Ershova Mykola D. Obushak Fedor I. Zubkov Victor N. Khrustalev

The title compound, C(17)H(18)NO(+)·I(-), is an adduct resulting from an intra-molecular Diels-Alder reaction of methallyl chloride with 3,4-dihydro-1-furylisoquinoline. The cation comprises a fused penta-cyclic system containing three five-membered rings (dihydro-pyrrole, dihydro-furan and tetra-hydro-furan) and two six-membered rings (tetra-hydro-pyridine and benzene). The five-membered rings...

2015
NurFadhilah Abdul Aziz Enis Nadia Md Yusof Thahira Begum S. A. Ravoof Edward R. T. Tiekink

In the title compound, C15H16N2S2, the central CN2S2 residue is almost planar (r.m.s. deviation = 0.0354 Å) and forms dihedral angles of 56.02 (4) and 75.52 (4)° with the phenyl and tolyl rings, respectively; the dihedral angle between the aromatic rings is 81.72 (5)°. The conformation about the N-N bond is gauche [C-N-N-C = -117.48 (15)°]. Overall, the mol-ecule has the shape of the letter L. ...

Journal: :Chem Catalysis 2021

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید