Synthesis of polymers containing pyridinium ylide and iminopyridinium ylide structure
نویسندگان
چکیده
منابع مشابه
Ylide Ligands
The use of ylides of P, N, As or S as ligands toward transition metals is still a very active research area in organometallic chemistry. This fact is mainly due to the nucleophilic character of the ylides and to their particular bonding properties and coordination modes. They can behave as monodentate or bidentate –chelate or bridging– species, they can be used as chiral auxiliary reagents, the...
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In the mol-ecule of the title compound, (2-thienylcarbon-yl)(triphenyl-phospho-nio)methanide, C(24)H(19)OPS, the geometry around the P atom is nearly tetra-hedral and the O-C-C-P torsion angle is 2.80 (3)°. The thio-phene ring is twisted through an angle of 4.33 (4)° with respect to the plane of the carbonyl group. Inter- and intra-molecular hydrogen bonds and C-H⋯π inter-actions are present in...
متن کاملStereoselective synthesis of three-membered ring compounds via ylide routes
Three types of small ring compounds (epoxides, aziridines and cyclopropanes) can be synthesized stereoselectively via ylide route. Among them, the stereochemistry of vinyloxiranes, vinylaziridines, cyclopropylesters, amides and ketones can be tuned by the choice of reaction conditions and ylides with varying heteroatoms and ligands. Optically active epoxides and acetylenylaziridines can be prep...
متن کاملFullerene derivatives incorporating phosphoramidous ylide and phosphoramidate: synthesis and property.
The reaction of dimethyl acetylenedicarboxylate (DMAD) with C(60) in the presence of hexamethylphosphorous triamide (HMPT) or hexaethylphosphorus triamide (HEPT) results in fullerene derivatives incorporating HMPT or HEPT ylides. The ylide derivatives exhibit unusual electronic absorptions in the visible region (435-660 nm), likely due to the presence of the ylide moiety. Electrochemical studie...
متن کاملHighly enantioselective ylide-mediated synthesis of terminal epoxides.
The highly efficient asymmetric epoxidation of aldehydes by methylene transfer is now possible using new sulfonium salts.
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ژورنال
عنوان ژورنال: Journal of Polymer Science: Polymer Chemistry Edition
سال: 1983
ISSN: 0360-6376,1542-9369
DOI: 10.1002/pol.1983.170211220