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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 37663Generated: October 29, 2026

Potassium Hydroxide → 5-Hydroxymethyl-3-(N-isopropyl-N-propylamino)chroman

https://huagongshe.com/reaction/37663

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium HydroxideHCID 14797—
ReactantSodium SulfateHCID 24436—
Reactant5-Methyloxycarbonyl-3-(N-isopropyl-N-propylamino)chromanHCID 19028105—
ReactantDiisobutylaluminumhydrideHCID 21225700—
SolventDichloromethaneHCID 6344—
SolventHexaneHCID 8058—
Product5-Hydroxymethyl-3-(N-isopropyl-N-propylamino)chromanHCID 1902816797%

Reaction Conditions

Temperature-78 °C

Reaction Steps

5-Methyloxycarbonyl-3-(N-isopropyl-N-propylamino)chroman (0.69 g, 2.36 mmol) was dissolved in 25 mL of dry methylene chloride and cooled to -78° C. A 1M solution of diisobutylaluminum hydride in hexane (6.6 mL) was added dropwise and the reaction was allowed to warm to room temperature for 50 min. A 1M solution of KOH was added dropwise and then the reaction was put into the refrigerator over night. The solution was poured through a pad of Na2SO4, dried (Na2SO4), filtered and the solvent removed in vacuo to give 0.60 g (97% yield) of the title compound as a clear oil.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05420151
Source datasetuspto-grants-1995_05
ORD IDord-cea37720bb5047429222fd3c9abed28a
Source noteuspto-grants-1995_05