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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1284970Generated: October 31, 2026

Water → HCID 13091948, compound

https://huagongshe.com/reaction/1284970

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantHexamethylphosphoramideHCID 12679—
ReactantPotassium BromideHCID 253877—
ReactantHCID 13091947HCID 13091947—
Catalyst18-Crown-6HCID 28557—
SolventTetrahydrofuranHCID 8028—
ProductHCID 13091948HCID 1309194876.6%

Reaction Steps

A solution of 11 g of 6-methyl-5-heptenyl tosylate in 100 ml of THF were added 10 ml of HMPA, 50 g of potassium bromide and 300 mg of 18-crown-6, and the resulting mixture was refluxed for 5 hours. After cooling, water was added, and the mixture was concentrated, the residue was extracted with pentane 3 times, the combined organic layers were washed with a saturated aqueous solution of sodium hydrogen carbonate water and saturated brine, dried and concentrated to give 8 g of an oily substance. This oily substance was distilled (bp 70° C./5 mm Hg) to yield 5.7 g of a pure bromide.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04564620
Source datasetuspto-grants-1986_01
ORD IDord-c1258102ce01404095765d37d5a4f794
Source noteuspto-grants-1986_01