Reactions Between Azolium Salts and Nucleophilic Reagents. V. 1,3-Disubstituted 1,2,3-Triazolium Salts Sodium Methoxide.
نویسندگان
چکیده
منابع مشابه
Nucleophilic arylation with tetraarylphosphonium salts
Organic phosphonium salts have served as important intermediates in synthetic chemistry. But the use of a substituent on the positive phosphorus as a nucleophile to construct C-C bond remains a significant challenge. Here we report an efficient transition-metal-free protocol for the direct nucleophilic arylation of carbonyls and imines with tetraarylphosphonium salts in the presence of caesium ...
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wvhich aire occupied by illustrations, hut the author has Nvritten succinctly without alnyloss of clarity, ani(d he can coinveymnuch valuable information in very little space. H-lis illustrations halve been chosen wisely, and their quality is of a remarkably high standard. There is no notable omission, withi the single exception, perhaps, of an account of the important changes in the only pa-t ...
متن کاملSynthesis of (1R,2R)-DPEN-derived triazolium salts and their application in asymmetric intramolecular Stetter reactions.
A series of novel chiral triazolium salts has been synthesized from readily available (1R,2R)-DPEN and found to be efficient for the enantioselective intramolecular Stetter reaction. With 10 mol% of the catalyst, the intramolecular Stetter reaction was realized in excellent yields with up to 97% ee.
متن کاملHighly enantioselective intramolecular Michael reactions by D-camphor-derived triazolium salts.
Camphor-derived chiral triazolium salts have been found to be highly efficient for asymmetric intramolecular Michael reactions. With 1-5 mol% of the catalyst, the desired products were obtained in excellent yields, with up to 99% ee.
متن کاملCrystal Structures of Two 1,4-Diamino-1,2,4-triazolium Salts
Bis(1,4-diamino-1,2,4-triazolium) sulfate (1) was obtained from the corresponding chloride by ion metathesis using Ag2SO4. Further metathesis with barium 5,51-azotetrazolate yielded bis(1,4-diamino-1,2,4-triazolium) 5,51-azotetrazolate (2). Numerous NH ̈ ̈ ̈N and NH ̈ ̈ ̈O interactions were identified in the crystal structures of 1 and 2. Both compounds undergo exothermal decomposition upon heating.
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ژورنال
عنوان ژورنال: Acta Chemica Scandinavica
سال: 1971
ISSN: 0904-213X
DOI: 10.3891/acta.chem.scand.25-0803