(Dicyclopropylmethyl)amine → N-(2-Chloroethyl)-N'-(dicyclopropylmethyl)thiourea
Reaction equation
[Cl:1][CH2:2][CH2:3][N:4]=[C:5]=[S:6].[CH:7]1([CH:10]([NH2:14])[CH:11]2[CH2:13][CH2:12]2)[CH2:9][CH2:8]1>O1CCCC1>[CH:7]1([CH:10]([NH:14][C:5]([NH:4][CH2:3][CH2:2][Cl:1])=[S:6])[CH:11]2[CH2:13][CH2:12]2)[CH2:9][CH2:8]1Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
9.2 g of β-chloroethyl isothiocyanate dissolved in 20 ml tetrahydrofuran are added dropwise to a solution of 9 g of dicyclopropylmethylamine in 70 ml tetrahydrofuran. The reaction mixture is kept at a temperature of from 0° to +5° C. during the addition, then maintained at room temperature for 2 hours. The solvent is evaporated to dryness and the residue, consisting essentially of N-(1,1-dicyclopropylmethyl) N'-(β-chloroethyl) thiourea, is recovered and used without any further purification for the next step of the synthesis.