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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2408349Generated: October 31, 2026

Cyanogen Bromide → HCID 178419511, compound

https://huagongshe.com/reaction/2408349

Reaction equation

Participants

RoleNameHCIDCharge
ReactantCyanogen BromideHCID 10476—
ReactantSodium MethoxideHCID 10942334—
Reactant3-Methylbutane-1,3-diamine dihydrobromideHCID 86700699—
SolventMethanolHCID 887—
SolventWaterHCID 962—
ProductHCID 178419511HCID 178419511195.8%

Reaction Steps

1.95 g of 3-methylbutane-1,3-diamine dihydrobromide are suspended in 20 mL of MeOH, 1.2 g of sodium methanolate are added. The mixture is stirred at RT for 2 h. The mixture is filtered and then dry evaporated. The reaction crude is solubilized in 20 mL of water, cooled with an ice bath. 0.78 g of BrCN are added and stirred at RT for 12 h. The mixture is dry evaporated, 3 g (quantitative yield) of 4,4-dimethyl-1,4,5,6-tetrahydropyrimidin-2-amine hydrobromide are obtained as a translucent oil which will be used as such for the following:

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08815853B2
Source datasetuspto-grants-2014_08
ORD IDord-3e7ca97b50744718bac500aaac18ed81
Source noteuspto-grants-2014_08