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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 22337Generated: October 28, 2026

Ethanol → 7,8,9,10-tetrahydro-3-methoxy-2-[3-(4-phenyl-1-piperidinyl)propoxy]-6H-dibenzo[b,d]pyran-6-one

https://huagongshe.com/reaction/22337

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthanolHCID 702—
Reactant4-PhenylpiperidineHCID 69873—
ReactantFumarateHCID 5460307—
Reactant7,8,9,10-tetrahydro-2-[3-(methanesulfonyloxy)propoxy]-3-methoxy-6H-dibenzo[b,d]pyran-6-oneHCID 19927709—
SolventAcetoneHCID 180—
Product7,8,9,10-tetrahydro-3-methoxy-2-[3-(4-phenyl-1-piperidinyl)propoxy]-6H-dibenzo[b,d]pyran-6-oneHCID 19927665100%

Reaction Steps

Method B (20 h at 50° C.); starting materials: 7,8,9,10-tetrahydro-2-[3-(methanesulfonyloxy)propoxy]-3-methoxy-6H-dibenzo[b,d]pyran-6-one (example 80) and 4-phenylpiperidine; yield 100% (raw). Fumarate: method E; yield 72% on the basis of the methanesulfonyl compound; fusion point 184°-186° C. (from ethanol and acetone).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05428038
Source datasetuspto-grants-1995_06
ORD IDord-8e588db9675443fbbb870f1f5253861a
Source noteuspto-grants-1995_06