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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1073235Generated: October 26, 2026

Methyl Isocyanate → (R,S)-Bis-(1-methyl-2,5-dioxo-4-imidazolidinyl-methyl)-disulphide

https://huagongshe.com/reaction/1073235

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethyl IsocyanateHCID 12228—
Reactant(-)-CystineHCID 67678—
SolventSodium HydroxideHCID 14798—
Product(R,S)-Bis-(1-methyl-2,5-dioxo-4-imidazolidinyl-methyl)-disulphideHCID 88616268—

Reaction Steps

To a mixture of L-cystine (12 g) and 2 molar sodium hydroxide solution (50 ml), cooled to 0°-5° C. in an ice bath, was added, dropwise, methyl isocyanate (8.55 g). The clear solution was stirred at 0° for 2 hours, and then at room temperature over night.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04968711
Source datasetuspto-grants-1990_11
ORD IDord-a01e2a8168c54280999c179befc67799
Source noteuspto-grants-1990_11