Formation of Indolizines via Pyridinium 3-Carbomethoxyallylides
نویسندگان
چکیده
منابع مشابه
Pd-catalyzed C-3 functionalization of indolizines via C-H bond cleavage.
New transition metal-catalyzed methods for the arylation of indolizines by the direct cleavage of C-H bonds have been developed. A wide range of aryltrifluoroborate salts react with indolizines in the presence of Pd(OAc)(2) catalyst and AgOAc oxidant to give the arylated indolizines in high yields. Both electron-donating and electron-withdrawing groups perform smoothly while bromide and chlorin...
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In the title salt, C(6)H(10)N(2) (2+)·2Br(-), the non-H atoms of the 3-methyl-pyridinium unit of the cation are almost coplanar (r.m.s. deviation = 0.0052 Å). In the crystal, the dications and Br anions are linked by a combination of six hydrogen bonds, viz. one N(py)-H⋯Br, two C-H⋯Br and three H(2)N-H⋯Br, into supra-molecular layers, parallel to the bc plane, composed of alternating R(2) (4)(1...
متن کاملIndolizines and pyrrolo[1,2-c]pyrimidines decorated with a pyrimidine and a pyridine unit respectively
The three possible structural isomers of 4-(pyridyl)pyrimidine were employed for the synthesis of new pyrrolo[1,2-c]pyrimidines and new indolizines, by 1,3-dipolar cycloaddition reaction of their corresponding N-ylides generated in situ from their corresponding cycloimmonium bromides. In the case of 4-(3-pyridyl)pyrimidine and 4-(4-pyridyl)pyrimidine the quaternization reactions occur as expect...
متن کامل4-(3-Carboxyphenyl)pyridinium nitrate
In the title salt, C(12)H(10)NO(2) (+)·NO(3) (-), the dihedral angle between the pyridine ring and the benzene ring of the 4-(3-carb-oxy-phen-yl)pyridinium cation is 30.14 (2)°. Inversion-related pairs of cations are linked into dimers by pairs of O-H⋯O hydrogen bonds. Pairs of dimers are linked by N-H⋯O and C-H⋯O hydrogen bonds involving nitrate anions as acceptors, generating supra-molecular ...
متن کامل3-(Ammoniomethyl)pyridinium bis(perchlorate)
In the title molecular salt, C6H10N2 (2+)·2ClO4 (-), the Cl-O bond lengths [anion 1: 1.369 (3)-1.415 (3); anion 2: 1.420 (2)-1.441 (2) Å] and the O-Cl-O angles [anion 1: 105.4 (2)-111.8 (4); anion 2: 107.8 (1)-110.3 (1)°] indicate a slight distortion of the perchlorate anions from regular tetra-hedral symmetry. In the crystal, the components are linked into columns along the a-axis direction vi...
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ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 1972
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.20.1058