The reaction of primary alkyl halides with Piloty's acid (C&SO* h'HOH) or Angeli's salt (NarN20t). reported by Angeli to give aldoximes. has been shown to proceed by alkylation of the beuzenesulfonhydroxamate or nitrohydroxamate ion, respectively, rather than by alkylation of nitroxyl, HNO. which these compounds generate. Sodium nitrosyl does not convert alkyl halides to oximes, nor does it convert aldehydes to hydroxamic acids (Aageli ...