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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 973103Generated: October 26, 2026

Methyl 7-bromoheptanoate → Methyl 5-oxocyclopent-1-ene-1-heptanoate

https://huagongshe.com/reaction/973103

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethyl 7-bromoheptanoateHCID 554086—
ReactantMethyl 6-BromohexanoateHCID 4170292—
ReactantMethyl 8-bromooctanoateHCID 11107373—
ReactantMethyl 7-bromohept-5-ynoateHCID 11287432—
ReactantMethyl 6-bromo-4-hexenoateHCID 53917093—
ReactantMethyl 6-(5-oxocyclopent-1-en-1-yl)hex-4-enoateHCID 54282459—
Reactant8-(5-Oxocyclopent-1-enyl)-6-octenoic acid methyl esterHCID 54454534—
ReactantMethyl 8-bromo-6-octenoateHCID 54475740—
ReactantMethyl 7-(5-oxocyclopent-1-en-1-yl)hept-5-enoateHCID 54504603—
ProductMethyl 5-oxocyclopent-1-ene-1-heptanoateHCID 2777884—
ProductMethyl 8-(5-oxocyclopent-1-EN-1-YL)octanoateHCID 14543894—
ProductMethyl 6-(5-oxo-1-cyclopenten-1-yl)hexanoateHCID 21420525—

Reaction Steps

Alternatively 6-(5-oxocyclopent-1-enyl)-4-hexenoic acid methyl ester, 7-(5-oxocyclopent-1-enyl)-5-heptenoic acid methyl ester and 8-(5-oxocyclopent-1-enyl)-6-octenoic acid methyl ester, as well as, 6-(5-oxocyclopent-1enyl)hexanoic acid methyl ester, 7-(5-oxocyclopent-1-enyl)heptanoic acid methyl ester, and 8-(5-oxocyclopent-1-enyl)octanoic methyl ester are prepared by following serially the procedures of Examples 13, 14 and 15, and using methyl 6-bromo-4-hexenoate, methyl 7-bromo-5-heptanoate, methyl 8-bromo-6-octenoate, methyl 6-bromohexanoate, methyl 7-bromoheptanoate, and methyl 8-bromooctanoate, respectively, as starting material instead of methyl 7-bromo-5-heptynoate.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04054741
Source datasetuspto-grants-1977_10
ORD IDord-a973a92b0677429bb16dfecd0911b9ba
Source noteuspto-grants-1977_10