149526-85-2Relevant articles and documents
Synthesis of N-(3-azido-4-chlorophenyl)-N'-[3H-methyl]thiourea, an efficient photoaffinity probe for the urea carrier
Lamotte,Degeilh,Neau,Ripoche,Rousseau
, p. 289 - 295 (1994)
Starting from commercial 4-chloro-3-nitroaniline, through a 5 step synthesis, was prepared 3-azido-4-chlorophenylisothiocyanate 5 which was reacted with [3H]-methylamine. The latter was obtained by three methods: i- [3H]-LiAlT4 reduction of benzylcarbamate gave rise to [3H][-methylamine (S.A.: >70 Ci/mmol). ii- Catalytic reduction of HCN with 3H2 lead to [3H]-CH3NH2 (S.A.: 0.7 Ci/mmol). iii- Schmidt rearrangement of [3H]-sodium acetate gave [3H]-CH3NH2 (S.A.: 29 Ci/mmol). Compound 7 at the highest specific activity had a self radiolysis rate precluding its practical use in biological studies whilst 29 Ci/mmol [3H]-7 was satisfactory.