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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 863688Generated: October 31, 2026

Ammonium Chloride → HCID 19696324, compound

https://huagongshe.com/reaction/863688

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmonium ChlorideHCID 25517—
ReactantSodium borohydrideHCID 4311764—
ReactantHCID 15063399HCID 15063399—
SolventMethanolHCID 887—
ProductHCID 19696324HCID 1969632476.1%

Reaction Steps

190 mg of sodium borohydride were added to a stirred solution of 650 mg of 8,9-dihydropyrido[1,2-a]indol-7(6H)-one in 50 ml of methanol under a nitrogen atmosphere. The mixture was stirred and then poured into 100 ml of saturated ammonium chloride solution. The mixture was extracted with ethyl acetate and the combined extracts were dried and evaporated to give a solid. This was crystallized from diethyl ether/n-hexane and gave 500 mg of 6,7,8,9-tetrahydro-7-hydroxypyrido[1,2-a]indole of melting point 99°-100° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05721245
Source datasetuspto-grants-1998_02
ORD IDord-b5adaf414ebb434f9d58328bd331df10
Source noteuspto-grants-1998_02