3,3,5,5-Tetramethyl-3,5-disila-4,10-dioxatetracyclo[5.5.1.02,6.08,12]tridecane-9,11-dione
نویسندگان
چکیده
The title compound, C(13)H(20)O(4)Si(2), is a siloxane-functionalized norbornane anhydride. Both five-membered heterocyclic rings of the mol-ecule have a planar structure, whereas the two five-membered aliphatic rings assume envelope conformations. Weak inter-molecular C-H⋯O hydrogen bonding is present in the crystal structure.
منابع مشابه
9-(4-Hydroxy-3,5-dimethoxyphenyl)-3,3,6,6-tetramethyl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-dione
In the title compound, C(25)H(30)O(6), the two fused cyclo-hexa-none rings have envelope conformations, whereas the central pyran ring is roughly planar [mximum deviation = 0.045 (2) Å]. The pyran and benzene rings are almost perpendicular to each other, making a dihedral angle of 86.32 (2)°. In the crystal, molecules are linked via pairs of O-H⋯O hydrogen bonds, forming inversion dimers.
متن کامل3,3,5,5-Tetramethyl-r-2,c-6-diphenylpiperidin-4-one
The piperidone ring of the title compound, C(21)H(25)NO, adopts a chair conformation with the two phenyl groups equatorially oriented and cis to each other. In the crystal, mol-ecules are linked by weak N-H⋯O hydrogen bonds, forming chains parallel to [100].
متن کاملAn efficient one-pot, three-component synthesis of indeno[1,2-b]quinoline-9,11(6H,10H)-dione, acridine-1,8(2H,5H)-dione and quinoline-3-carbonitrile derivatives from enaminones.
An efficient one-pot, three-component method for the preparation of indeno[1,2-b]quinoline-9,11(6H,10H)-dione, acridine-1,8(2H,5H)-dione and various multi-substituted quinoline-3-carbonitrile derivatives has been developed through the Michael addition to enaminones, which was achieved by both microwave irradiation and conventional heating.
متن کامل3,3,6,6-Tetramethyl-9-[6-(3,3,6,6-tetramethyl-1,8-dioxo-2,3,4,5,6,7,8,9-octahydro-1H-xanthen-9-yl)pyridin-2-yl]-2,3,4,5,6,7,8,9-octahydro-1H-xanthene-1,8-dione
In the title mol-ecule, C(39)H(45)NO(6), the two tetra-methyl-octa-hydroxanthen-1,8-dione substituents are arranged approximately parallel to each other and approximately perpendicular to the plane of the pyridine ring. The six-membered xanthene rings adopt flattened boat conformations with the O and methine C atoms deviating from the plane of the other four atoms.
متن کامل2,2,4,4-Tetraphenyl-1,3-bis(3,3,5,5-tetramethyl-1,1-diphenyl-5-vinyltrisiloxan-1-yl)cyclodisilazane
The title mol-ecule, C(60)H(70)N(2)O(4)Si(8), lies on an inversion center. In the asymmetric unit, one of the phenyl rings is disordered over two sets of sites with refined occupancies 0.58 (2) and 0.42 (2). In addition, in two substitution sites of the terminal dimeth-yl(vin-yl)silyl unit, a methyl group and the vinyl group are disordered over the same site with refined occupancies 0.523 (13) ...
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