Crystal Structure of Ethyl-1-phenyl-2-trimethylsilanyl-3-oxo-3H-Benzo[b]cyclobuta[d]pyran-2a(8bH)-carboxylate
نویسندگان
چکیده
منابع مشابه
Crystal structure of ethyl 2-(4-chlorophenyl)-3-cyclopentyl-4-oxo-1-propylimidazolidine-5-carboxylate
The title compound, C20H27ClN2O3, was obtained via an original synthesis method. The central heterocyclic ring adopts a shallow envelope conformation, with the N atom bearing the cyclo-pentane ring as the flap [deviation from the other atoms = 0.442 (2) Å]. The cyclo-pentane ring adopts a twisted conformation about one of the CN-C bonds: the exocyclic C-N bond adopts an equatorial orientation. ...
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wide interest because the 1H-pyridin-2-ones obtained in this process are versatile synthetic building blocks in the synthesis of alkaloids,1–5 although little has been done concerning their use in asymmetric synthesis. This contrasts with the large use of chiral piperidones, which have recently been reported. The synthetic method proceeds first through the addition of the hydroxide anion at pos...
متن کاملEthyl 3-oxo-3H-benzo[f]chromene-2-carboxylate
In the title compound, C(16)H(12)O(4), the chromene ring system is almost planar [maximum deviation = 0.026 (1) Å] and makes dihedral angles of 1.24 (9) and 26.5 (2)° with the fused benzene ring and the plane of the ethyl carboxyl-ate group, respectively.
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In the title mol-ecule, C(21)H(19)ClO(3), the cyclo-hexene ring adopts an envelope conformation, with all substituents equatorial. The plane through its five coplanar atoms makes dihedral angles of 12.75 (14) and 74.16 (8)° with the phenyl and benzene rings, respectively. The dihedral angle between the latter two rings is 81.73 (12)°. Inter-molecular C-H⋯O hydrogen bonds and intra-molecular C-H...
متن کاملCrystal structure of (-)-(1'R)-1-(2'-hydroxy-1'-phenyl-ethyl)-1H-pyridin-2-one.
wide interest because the 1H-pyridin-2-ones obtained in this process are versatile synthetic building blocks in the synthesis of alkaloids.1–5 The title compound, (–)-(1′R)-1-(2′-hydroxy-1′-phenyl-ethyl)1H-pyridin-2-one II, was prepared by stirring a solution of pyridinium salt, I (4.0 mmol), in water (25 ml) and cooled to 5 ̊C (Scheme 1). A solution of K3Fe(CN)6 (11 eq.) in water (30 ml) was ad...
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ژورنال
عنوان ژورنال: Analytical Sciences: X-ray Structure Analysis Online
سال: 2008
ISSN: 1348-2238
DOI: 10.2116/analscix.24.x49