Synthese von sulfinsäureimidamidostannanen

N-Lithiomethanesulfinicacidimide amides of the general composition MeS(NR)NRLi (II) are prepared by addition of methyllithium to sulfur diimides RNSNR (I) (R  t-Bu or SiMe₃. The corresponding reaction with Me₃SnNSNSnMe₃ yields the N-lithio salt (Me₃SnNSN)Li (III) and tetramethylstannane; addition compounds are not formed. Methatetical reactions of II with chlorostannanes, Me₃SnCl or Me₂SnCl₂, leads to the formation of the sulfinicacidimideamidostannanes MeS(NR)NRSnMe₃ (IV) and MeS(NR)NRSnClMe₂ (Va), respectively.