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The article focuses on the crystallization of the compound tris(cyclohexylmethyl)amine. The compound formed is a sterically hindered amine with three cyclohexane rings having chair conformations. In the experiment a solution of cyclohexene in dioxane, methanol and glacial acetic acid in the presence of urea was treated under hydroaminomethylation conditions. The mixture was extracted with ethyl acetate.

The title compound, C18H29IO3, features a trans-fused bicyclic system. The carbonyl group lies on the same side as the carbethoxy function and iodine. The six-membered ring has a chair conformation. [ABSTRACT FROM AUTHOR]

The title compound, C25H29NO3, was prepared in the course of the generation of depsipeptide libraries resembling the Jasplakinolide family of natural products. The dihedral angle between the phenyl ring planes is 74.1 (3)° The oxazolidinone ring adopts a slightly distorted 4 E conformation with an axial projection of the isopropyl substituent, which is easily rationalized by pseudo-allylic strain exerted by the exocyclic imide carbonyl. The two carbonyl groups adopt a noncolinear S-shaped conformation. [ABSTRACT FROM AUTHOR]

The molecule of the title compound, C20H34O4, is centrosymmetric. In the crystal structure, a network of O—H...O hydrogen bonds result in each molecule being linked to four neighbouring molecules and a two-dimensional net is formed. [ABSTRACT FROM AUTHOR]

The chiral title compound, C17H20ClNO5, arose as a side product during the synthesis of novel furanomycin derivatives. The stereochemistry at the bicyclic core is consistent with a halolactonization step. The five-membered rings are nearly perpendicular to each other [torsion angle at the common bond: −88.3 (3)°]. [ABSTRACT FROM AUTHOR]

The title compound, C12H15ClF3NO4, is a side product in a synthesis of novel furanomycin derivatives. The stereochemistry at the bicyclic core is consistent with a halolactonization step. However, racemization also occurred via an unknown mechanism. The five-membered rings are nearly perpendicular to each other [torsion angle at the common bond: −95.6 (2)°]. [ABSTRACT FROM AUTHOR]

The title compound, C8H12O3, was synthesized to prove the relative configuration in the projected total synthesis of curvicollides A–C. In the crystal structure, molecules are linked via a bifurcated O—H...O hydrogen bond and a chain of molecules is formed along the a axis. [ABSTRACT FROM AUTHOR]

The title compound, C20H27NO4, is a synthetic inter­mediate towards the preparation of novel furan­omycin derivatives. Its structure is consistent with the assumed anti selectivity of the allenylation step. [ABSTRACT FROM AUTHOR]

The title compound, C17H32N4, contains two piperazine heterocycles, which are methyl­ene bridged. The rings have chair conformations, with all substituents equatorial. [ABSTRACT FROM AUTHOR]

The title compound, C21H26N2, a potential chiral ligand for transition metal-catalysed reactions, crystallizes with one mol­ecule in the asymmetric unit; the mol­ecule has a pseudo-twofold axis perpendicular to the central C=C=C fragment. [ABSTRACT FROM AUTHOR]

The crystal structure of the title compound, C11H12O, a substrate for gold-catalysed cyclo­isomerization reactions [Hoffmann-Röder & Krause (2001). Org. Lett. 3, 2537–2538], contains two mol­ecules in the asymmetric unit. There are two inter­molecular O—H ⋯ O hydrogen bonds in the crystal structure and a chain of mol­ecules is formed along the c axis via these hydrogen bonds. [ABSTRACT FROM AUTHOR]

In the title compound, C14H30O4Si, the bond angles around Si are in the range 105.4 (3)–112.1 (4)° and the tetra­hydro­furan ring adopts a distorted envelope conformation. There is one intra­molecular and one inter­molecular O—H⋯O hydrogen bond in the crystal structure. A spiral of mol­ecules forms around the 41 axis ( c axis) of the crystal structure via the inter­molecular O—H⋯O hydrogen bond. [ABSTRACT FROM AUTHOR]

The title compound, C20H19F3N2O4, crystallizes with two mol­ecules in the asymmetric unit. The important characteristics of the mol­ecule are the two C=N bonds in Z,E configuration, one in the β-methoxy-system and the other in the oxy­methyl side chain between the two aromatic rings. [ABSTRACT FROM AUTHOR]

The crystal structure of the title compound, C20H19F3N2O4, contains one mol­ecule in the asymmetric unit. The CF3 group is disordered over two positions. The important characteristics of the mol­ecule are the two C=N bonds in an E,Z-configuration, viz. E in the β-methoxy system and Z in the oxymethyl chain between the two aromatic rings. [ABSTRACT FROM AUTHOR]

The crystal structure of the title compound, C19H17F3N2O4, a metabolite of the fungicide trifloxy­strobin (TFS), contains one mol­ecule in the asymmetric unit. The CF3 group is disordered over two positions. The important characteristics of the mol­ecule are the two C=N bonds in an E,E configuration, one in the β-methoxy system and the other in the oxy­methyl side chain between the two aromatic rings. The mol­ecules are linked via an O—H⋯N hydrogen bond and an infinite spiral is formed along the b-axis direction. [ABSTRACT FROM AUTHOR]

The chiral title compound, C28H26O2, with potential uses in the synthesis of aza­macroheterocycles, shows a locked S-configuration for the binaphthyl unit. The diolefinic building blocks were prepared as diallylic ethers of ( S)-1,1′-binaphthol. The dihedral angle between the least-squares planes of the bicyclic ring systems is 68.53 (3)°. The mol­ecule resides on a twofold axis. [ABSTRACT FROM AUTHOR]

The chiral title compound, C12H17OP, with potential uses in asymmetric induction in homogeneous catalysed reactions, shows an s- cis conformation for the C=C—P=O unit, in common with related materials. [ABSTRACT FROM AUTHOR]

In the title compound, C40H32N2O2P2, used as a nixantphos-type ligand in homogeneous catalysis, the central phenoxazine ring system deviates markedly from planarity, the dihedral angle between the two halves being 38.14 (3)°. The intra­molecular P⋯P distance is 4.2400 (7) Å. [ABSTRACT FROM AUTHOR]

In the title compound, C40H33NO3P2, used as a nixantphos-type ligand in homogeneous catalysis, the central phenoxazine ring system is nearly planar. The most important feature of the mol­ecule is the intra­molecular P⋯P distance of 4.2346 (13) Å. The angles involving the P atoms are in the range 100.90 (13)–103.40 (16)°. [ABSTRACT FROM AUTHOR]

The title compound, C25H35O3PS, is a chiral phosphinate containing five stereogenic centers, one at the P atom, one at the S atom and three in the (−)-menthyl group. The crystal packing reveals that mol­ecules are linked into chains along the a axis by inter­molecular C—H⋯O hydrogen-bonding inter­actions. [ABSTRACT FROM AUTHOR]

The title compound, C42H41NOP2Si, used as a nixantphos-type ligand in homogeneous catalysis, crystallizes with one mol­ecule in the asymmetric unit. The mol­ecule has nearly mirror symmetry with N, O and Si on the pseudo-mirror plane, but it is not located on a crystallographic mirror plane. The most important feature of the mol­ecule is the intra­molecular P—P distance of 4.1453 (12) Å. The bond angles involving the P atoms are in the range 100.32 (14)–103.04 (15)°. [ABSTRACT FROM AUTHOR]

In the crystal structure of the title compound, (4a R,5 R,6 S,7 S,8a S)-methyl 8a-ethenylocta­hydro-5-acet­oxy-7-{[2-(acetoxy­meth­yl)-1-oxo-2-propen­yl]­oxy}-α,4-bis­(methyl­ene)-3-oxo-1 H-2-benzopyran-6-acetate, C24H28O10, the mol­ecule has a cis configuration at the junction of the two six-membered rings and not a trans configuration as was assigned on the basis of NMR data in solution [Asaka et al. (1977). Phytochemistry, 16, 1838–1839]. [ABSTRACT FROM AUTHOR]

The mol­ecule of the title compound, C16H30O2, features a trans-fused bicyclic system. The six-membered ring has a chair conformation. The mol­ecules are linked via an O—H⋯O hydrogen bond [O⋯O = 2.7696 (11) Å and O—H⋯O = 174.2 (13)°] to form chains along the b axis. An intra­molecular O—H⋯O hydrogen bond [O⋯O = 2.6722 (11) Å and O—H⋯O = 148.4 (13)°] is present. [ABSTRACT FROM AUTHOR]