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

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.
Inventors:
;
Issue Date:
OSTI Identifier:
5151803
Assignee:
Dept. of Energy, Washington, DC () PTO; EDB-94-065034
Patent Number(s):
US 5283336; A
Application Number:
PPN: US 7-941813
Contract Number:
W-7405-ENG-48
Resource Relation:
Patent File Date: 8 Sep 1992
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; DYE LASERS; LASER MATERIALS; SYNTHESIS; QUINOLINES; HYDROGENATION; HYDROLYSIS; NITRATION; PHENOLS; REDUCTION; AROMATICS; AZAARENES; AZINES; CHEMICAL REACTIONS; DECOMPOSITION; HETEROCYCLIC COMPOUNDS; HYDROXY COMPOUNDS; LASERS; LIQUID LASERS; LYSIS; MATERIALS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; PYRIDINES; SOLVOLYSIS; 426002* - Engineering- Lasers & Masers- (1990-); 400201 - Chemical & Physicochemical Properties