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Method for preparation of 7-hydroxy-1,2,3,4-tetrahydroquinoline from 1,2,3,4-tetrahydroquinoline

Patent ·
OSTI ID:5151803
;
Methods for the efficient preparation of 7-hydroxy-1,2,3,4-tetrahydroquinoline include a first method in which the acylation of m-aminophenol obtains a lactam which is reduced to give the desired quinoline and a second method in which tetrahydroquinoline is nitrated and hydrogenated and then hydrolyzed to obtain the desire quinoline. 7-hydroxy-1,2,3,4-tetrahydroquinoline is used in the efficient synthesis of four lasing dyes of the rhodamine class.
DOE Contract Number:
W-7405-ENG-48
Assignee:
Dept. of Energy, Washington, DC ()
Patent Number(s):
A; US 5283336
Application Number:
PPN: US 7-941813
OSTI ID:
5151803
Country of Publication:
United States
Language:
English

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
AROMATICS
AZAARENES
AZINES
CHEMICAL REACTIONS
DECOMPOSITION
DYE LASERS
HETEROCYCLIC COMPOUNDS
HYDROGENATION
HYDROLYSIS
HYDROXY COMPOUNDS
LASER MATERIALS
LASERS
LIQUID LASERS
LYSIS
MATERIALS
NITRATION
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHENOLS
PYRIDINES
QUINOLINES
REDUCTION
SOLVOLYSIS
SYNTHESIS