Radical–nucleophilic substitution (S<sub>RN</sub>1) reactions: preparation and reactions of α-nitrosuiphides
作者:W. Russell Bowman、Geoffrey D. Richardson
DOI:10.1039/p19800001407
日期:——
α-Nitrosulphides were prepared by SRN1 reaction of 2-bromo-2-nitropropane with thiolate anions, and by SN2 attack of sodium 2-nitropropan-2-ide on symmetrical disulphides. The α-nitrosulphides undergo radicalnucleophilic substitution (SRN1) by nitronate, sulphinate, and malonate anions, but not by thiolate anions.
Radical-nucleophilic substitution (SRN1) reactions of α-nitro-thiocyanates
作者:Suleiman I. Al-Khalil、W.Russell Bowman
DOI:10.1016/s0040-4039(00)81970-x
日期:1983.1
α-Nitro-thiocyanates undergo substitution by a SRN1mechanism with a range of anions to give loss of thiocyanate, corroborating behaviour observed for the intermediate α-nitro-thiocyanato radical-anions by e.s.r. spectroscopy.
Esters, ketones, nitriles and nitro compounds bearing an .alpha.-nitro substituent react with certain salts of aliphatic nitro compounds with displacement of the .alpha.-nitro substituent. The resulting products are esters, ketones, nitriles and nitro compounds bearing a .beta.-nitro substituent. Very good yields of the products are obtained when the reaction is run in an aprotic solvent. The .beta.-nitro products are useful in the treatment of various plant pathogens. The method is applicable to the preparation of a variety of .beta.-nitroesters, .beta.-nitroketones, .beta.-nitronitriles and .alpha.,.beta.-dinitro compounds. Many of these .beta.-nitro compounds are novel compounds not known heretofore.