A High Cis-Stereoselectivity in the Hydrogenation of 6-t-Butyltetrahydropyran-3-one and 2-t-Butyl-1,3-dioxan-5-one
نویسندگان
چکیده
منابع مشابه
r-2,c-6-Bis(3-methoxyphenyl)-t-3,t-5-dimethylpiperidin-4-one
In the title compound, C(21)H(25)NO(3), the piperidinone ring adopts a chair conformation with an equatorial orientation of all substituents; the 3-methoxy-phenyl groups make a dihedral angle of 60.26 (15)°. The carbonyl group O atom is disordered over two positions in a 0.643 (3):0.357 (3) ratio. The crystal structure is stabilized by N-H⋯O and C-H⋯O hydrogen bonding.
متن کامل1-Formyl-t-3,t-5-dimethyl-r-2,c-6-diphenylpiperidin-4-one
In the title compound, C(20)H(21)NO(2), the piperidine ring adopts a distorted boat conformation. The dihedral angle between the two phenyl rings is 61.33 (18)°. In the crystal, inter-molecular C-H⋯O inter-actions link the mol-ecules into zigzag C(5) chains running parallel to [100].
متن کامل1-Formyl-r-2,c-6-bis(4-methoxyphenyl)-t-3,t-5-dimethylpiperidin-4-one
In the title compound, C(22)H(25)NO(4), the piperidine ring adopts a distorted boat conformation. The methyl groups at the 3 and 5 positions of the piperidine ring are in axial and equatorial orientations, respectively. Both H and O atoms in the aldehyde group are disordered over two positions with occupancies of 0.534 (5) and 0.466 (5). In the crystal, the mol-ecules are linked into a three-di...
متن کامل1-Dichloroacetyl-r-2,c-6-bis(4-methoxyphenyl)-t-3,t-5-dimethylpiperidin-4-one
In the title compound, C(23)H(25)Cl(2)NO(4), the piperidine ring adopts a distorted boat conformation. The dihedral angle between the benzene rings is 54.8 (1)°. In the crystal, the mol-ecules are linked into a two-dimensional network parallel to the ab plane by C-H⋯O hydrogen bonds.
متن کامل1-Dichloroacetyl-t-3,t-5-dimethyl-r-2,c-6-diphenylpiperidin-4-one
In the title compound, C21H21Cl2NO2, the piperidine ring adopts a distorted boat conformation. The phenyl rings substituted at the 2- and 6-positions of the piperidine ring subtend angles of 87.9 (7) and 70.8 (9)°, respectively, with the best plane through the piperidine ring. In the crystal, mol-ecules are connected by C-H⋯O and C-H⋯Cl inter-actions into layers in the ab plane.
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1989
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.62.2948