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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 728546Generated: October 25, 2026

Ethanol → Butyric acid [1-(6-methyl-2,3-dihydro-2-pyranyl)ethylidene]hydrazide

https://huagongshe.com/reaction/728546

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthanolHCID 702—
ReactantButyrohydrazideHCID 77079—
ReactantEthanone, 1-(3,4-dihydro-6-methyl-2H-pyran-2-yl)-HCID 141413—
SolventWaterHCID 962—
ProductButyric acid [1-(6-methyl-2,3-dihydro-2-pyranyl)ethylidene]hydrazideHCID 13171700112%

Reaction Steps

A mixture of 5.0 gm (0.0356 mole) of 2-acetyl-6-methyl-2,3-dihydropyran, 3.64 gm (0.0356 mole) of n-butyric acid hydrazide and 100 ml of ethanol is refluxed 24 hr. The mixture is diluted with water to the cloud point and chilled. The product is collected, washed with water and dried to give 0.93 gm (12%) of the title compound having a melting point of 72.8° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05049561
Source datasetuspto-grants-1991_09
ORD IDord-f5ee7a77cb3648eeaa26c629764f2bdb
Source noteuspto-grants-1991_09