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- W2950797640 abstract "A substituent at the 3-position on a pyridine ring significantly affects the regioselectivity during the addition of alkynes to pyridinium salts. When the substituent is an electron-withdrawing group, 1,6-adducts are predominantly produced, whereas, 1,2-adducts become the major products when the substituent is an electron-donating group. The changes in the regioselectivity depending on the substituent can be explained by the difference in the product stabilities. The produced dihydropyridines are easily aromatized into disubstituted pyridines with chloranil in quantitative yields." @default.
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- W2950797640 date "2009-07-28" @default.
- W2950797640 modified "2023-09-24" @default.
- W2950797640 title "ChemInform Abstract: A Significant Substituent Effect on the Regioselectivity in Addition of Alkynes to 3-Substituted Pyridines." @default.
- W2950797640 cites W2047905182 @default.
- W2950797640 doi "https://doi.org/10.1002/chin.200930150" @default.
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