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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 443334Generated: October 29, 2026

Diisopropylamine → 2-(2-Hydroxy-2-methylheptyl)-3,5,6-trimethylpyrazine

https://huagongshe.com/reaction/443334

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDiisopropylamineHCID 7912—
Reactant2-HeptanoneHCID 8051—
ReactantTetramethylpyrazineHCID 14296—
ReactantButyllithiumHCID 178418339—
SolventDiethyl EtherHCID 3283—
Product2-(2-Hydroxy-2-methylheptyl)-3,5,6-trimethylpyrazineHCID 20444208—

Reaction Steps

The preparation is carried out in the manner described in Example VII using 10.1 grams (0.1 mole) of diisopropylamine in 80 milliliters of ether, 0.95 mole of butyllithium, 13.6 grams (0.1 mole) of tetramethylpyrazine, and 12.8 grams (0.1 mole) of 2-heptanone. The reaction is worked up as before, and the product is isolated by chromatography on silica gel.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04259969
Source datasetuspto-grants-1981_04
ORD IDord-35f5fefee05e43859693bd7783fb1f75
Source noteuspto-grants-1981_04