(4R)-3-Hydroxy-7-isopropyl-4-methyl-5,6-dihydrobenzofuran-2(4H)-one
نویسندگان
چکیده
منابع مشابه
(4R)-3-Hydroxy-7-isopropyl-4-methyl-5,6-dihydrobenzofuran-2(4H)-one
In the title compound, alternatively called α-hy-droxy-γ-alkyl-idenebutenolide, C12H16O3, two independent mol-ecules (A and B) crystallize in the asymmetric unit in each of which the 5,6-di-hydro-benzo ring has an envelope conformation. The torsion angle along the butadiene chain in the γ-alkyl-idenebutenolide core is -177.9 (2)° for mol-ecule A and 179.9 (2)° for mol-ecule B. In the crystal, O...
متن کامل(4R,5S)-5-Benzyl-4-isopropyl-1,3,4-oxadiazinan-2-one
The title compound, C(13)H(18)N(2)O(2), is an N(4)-isopropyl-l-phenyl-alanine-based oxadiazinanone. Although the two mol-ecules in the asymmetric unit are oriented appropriately for hydrogen bonding, the distance between the donor and acceptor atoms is large enough to support only weak, if any, hydrogen bonding. The absolute configuration is known based on the known starting compounds in the sy...
متن کاملrac-7-Methyl-3-[(7-methyl-4-oxochroman-3-yl)methyl]-4H-chromen-4-one
In the racemic title compound, C21H18O4, the chromone ring is essentially planar [maximum deviation from the least-squares plane = 0.026 (3) Å], with a dihedral angle of 78.18 (12)° between the benzene rings of the chromanone and chromenone moieties. In the crystal, there are weak π-π stacking inter-actions [minimum ring centroid separation = 3.9286 (17) Å].
متن کامل(6R)-2-tert-Butyl-6-[(4R,5S)-3-isopropyl-4-methyl-5-phenyloxazolidin-2-yl]phenol
In the title compound, C(23)H(31)NO(2), the lone pair on the nitro-gen atom is oriented to facilitate intra-molecular hydrogen bonding with the hydr-oxy group residing on the phenyl substituent. The five-membered ring adopts an envelope confornmation with the O atom at the flap. The absolute stereochemistry was verified by measurement of optical activity using a digital polarimeter.
متن کامل2-Methyl-3-(2-methylphenyl)-7-nitroquinazolin-4(3H)-one
In the title methaqua-lone analogue, C(16)H(13)N(3)O(3), the 2-tolyl group is almost orthogonal [dihedral angle = 85.20 (5)°] to the fused ring system (r.m.s. deviation of fitted non-H atoms = 0.029 Å). In the crystal, twofold symmetry generates two-mol-ecule aggregates linked by C-H⋯O and π-π inter-actions [ring centroid-centroid distance = 3.4967 (6) Å].
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2014
ISSN: 1600-5368
DOI: 10.1107/s1600536814014524