| http://www.w3.org/ns/prov#value | - D4) Cleavage Stage [0220] The cleavage stage described below is valid whatever the functionalization carried out beforehand on the secondary amine: [0221] General procedure: The disubstituted resin is swollen in solvents such as dichloromethane, dimethylformamide or tetrahydrofuran then the halide R3X is added in which R3 has the meaning indicated previously and X
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