Methanol → HCID 86627533, compound

Participants

Reaction Steps

2.7 mL (9.1 mmol) of titanium isopropoxide and 1.2 g (7 mmol) of (tert-butoxycarbonyl-methyl-amino)-acetaldehyde (prepared according to the method described by Kato, Shiro et al., J. Chem. Soc. Perkin Trans. 1, 1997, 21, 3219-26) are added to a solution of 1.16 g (21 mmol) of propargylamine in 50 mL of anhydrous tetrahydrofuran. The solution is stirred for 5 hours at room temperature then 5 mL of anhydrous methanol and 317 mg (8.4 mmol) of sodium borohydride is added. Stirring is continued for a further 2 hours then 2 mL of water is added. The reaction mixture is filtered then the solvents are evaporated. The residue is purified by chromatography on silica (eluent dichloromethane/methanol 98/2) to give 550 mg (37%) of N-tert-butoxycarbonyl-N-methyl-N′-prop-2-ynyl-ethane-1,2-diamine in the form of a colourless oil.

Provenance & Evidence