Sulfinates from Amines: A Radical Approach to Alkyl Sulfonyl Derivatives via Donor–Acceptor Activation of Pyridinium Salts
作者:Jonathan A. Andrews、Loïc R. E. Pantaine、Christopher F. Palmer、Darren L. Poole、Michael C. Willis
DOI:10.1021/acs.orglett.1c03194
日期:2021.11.5
Synthetically versatile alkyl sulfinates can be prepared from readily available amines, using Katritzky pyridinium salt intermediates. In a catalyst-free procedure, primary, secondary, and benzylic alkyl radicals are generated by photoinduced or thermallyinduced single-electron transfer (SET) from an electron donor–acceptor (EDA) complex, and trapped by SO2 to generate sulfonyl radicals. Hydrogen
Kinetics and mechanisms of nucleophilic displacements with heterocycles as leaving groups. Part 9. N-substituted 2,4,6-triphenylpyridiniums, 5,6-dihydro-2,4-diphenylbenzo[h]quinoliniums, and 5,6,8,9-tetrahydro-7-phenyldibenzo[c,h]acridiniums: kinetic rate variation with structure of the N-substituent
作者:Alan R. Katritzky、Kumars Sakizadeh、Yu Xiang Ou、Bratislav Jovanovic、Giuseppe Musumarra、Francesco P. Ballistreri、Roberto Crupi
DOI:10.1039/p29830001427
日期:——
order benzyl > methyl ≃ s-alkyl > continuous chain primary alkyl ≃ neopentyl. Comparisons with literature data involving other leavinggroups, standardized by reference to the ethyl compound in each series, again show that groups larger than ethyl tend to react faster in series (1), (2), and especially (3) than expected, and methyl tends to react more slowly. Similar but smaller trends are found in literature
Katritzky, Alan R.; Lloyd, Jeremy M.; Patel, Ranjan C., Journal of the Chemical Society. Perkin transactions I, 1982, p. 117 - 124
作者:Katritzky, Alan R.、Lloyd, Jeremy M.、Patel, Ranjan C.
DOI:——
日期:——
Kinetics and mechanism of the C-alkylation of nitroalkane anions by 1-alkyl-2,4,6-triphenylpyridiniums: a nonchain reaction with radicaloid characteristics
作者:Alan R. Katritzky、M. Akram Kashmiri、George Z. De Ville、Ranjan C. Patel