Cysteamine → HCID 4364923, compound

Participants

Reaction Steps

4-Methoxybenzyl chloride (15.6 g) was reacted with 2-aminoethanethiol (7.7 g) in methanol and sodium methoxide, to afford of 2-(4-methoxybezyl-sulfanyl)-ethylamine (1) (18.8 g). One half of this material was taken in dichloromethane (cooling bath 0° C.). Chloroacetyl chloride in the same solvent, was added slowly with stirring, followed by an equivalent of triethyl amine to produce 2-chloro N-[2-(4-methoxybenzyl-sulfanyl)-ethyl]acetamide (2) in a 94% yield. Compound 2 was reacted with an equivalent amount of 1 in refluxing acetonitrile for 6 hrs to provide N-[-2-(4-methoxy-benzylsulfanyl)-ethyl]-2-[2-(4-methoxy-benzylsulfanyl)-ethylamino]-acetamide (3) (40.4 g). Compound 3 was reduced with lithium aluminium hydride (LAH) to yield 4 in 85%.

Provenance & Evidence