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

Patent · Tue Feb 01 00:00:00 EST 1994

OSTI ID:5151803

Field, G; Hammond, P R

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): US 5283336; A
• Application Number: PPN: US 7-941813
• OSTI ID: 5151803
• Resource Relation: Patent File Date: 8 Sep 1992
• Country of Publication: United States
• Language: English

Related Subjects

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