Concise Entries to 4-Halo-2-pyridones and 3-Bromo-4-halo-2-pyridones
نویسندگان
چکیده
منابع مشابه
(E)-4-Bromo-N-{(E)-3-[(4-bromo-2-methylphenyl)imino]butan-2-ylidene}-2-methylaniline
The title compound, C(18)H(18)Br(2)N(2), is centrosymmetric with the mid-point of the central C-C bond of the butyl group located on an inversion center. The terminal benzene ring is approximately perpendicular to the central butyl plane [dihedral angle = 71.9 (8)°]. No hydrogen bonding or aromatic stacking is observed in the crystal.
متن کاملPhotochemical dehydrogenation of 3,4-dihydro-2-pyridones.
Photochemical dehydrogenation of various substituted 3,4-dihydro-2-pyridones was achieved in a very efficient way by employing 10-15 mol% of photo-induced electron transfer sensitizers like 9-cyanoanthracene, 9-cyanophenanthrene and 1-cyanonaphthalene in presence of molecular oxygen, for the first time.
متن کاملSynthesis of Some New Enaminoketones, Analogous of Milrinone, 4,Pyrones and Related 4-Pyridones
Synthesis of 4-(N,N- dimethylamino)-3-aryl-3-butene-2-one, ethyl-5-aryl-4-oxo-4H-pyran-2-carboxylate, ethyl-5-aryl-4-pyridones-2-carboxylate and 5-aryl-3-cyano-5-methyl-2-pyridones (aryl=3-thienyl, 2-furyl) are described.
متن کاملSynthesis and phytotoxic activity of new pyridones derived from 4-hydroxy-6-methylpyridin-2(1H)-one.
Commercial dehydroacetic acid was converted into 4-hydroxy-6-methylpyridin-2(1H)-one (3), which was then condensed with several aliphatic aldehydes to produce seven new title compounds in variable yields (35-92%). Reaction of 3 with alpha,beta-unsaturated aldehydes resulted in the formation of condensed pyran derivatives 4g' and 4h'. A mechanism is proposed to explain the formation of such comp...
متن کاملMethyl 2-bromo-3-(4-chlorobenzenesulfonamido)benzoate
In the crystal structure of the title compound, C(14)H(11)BrClNO(4)S, the mol-ecules form inversion dimers with R(2) (2)(8) motifs through pairs of N-H⋯O hydrogen bonds. The benzene rings are not coplanar and subtend a dihedral angle of 66.27 (8)°. The carbomethoxy group makes a dihedral angle of 75.1 (1)° with the ring to which it is attached.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Synlett
سال: 2015
ISSN: 0936-5214,1437-2096
DOI: 10.1055/s-0035-1560469