Process for the preparation of halo-4-phenoxyquinolines

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C07D21516

Patent

active

059731532

ABSTRACT:
The present invention relates to a new improved, simplified process for the preparation of halo-4-phenoxyquinolines, whereby thionyl chloride is used as the chlorinating agent to prepare the corresponding chloroquinoline intermediate prior to the final coupling reaction, and a single, inert high boiling polyether solvent is used throughout the entire reaction procedure.

REFERENCES:
patent: 5145843 (1992-09-01), Arnold et al.
patent: 5245036 (1993-09-01), Robey et al.
Chemical Abstracts 124:29619, Yoshizawa, abstract of WO 9523787, 1995.
Chemical Abstracts 124:55810, Macquarrie, abstract of CH 685560, 1995.
Chemical Abstracts 121:205192, Prakash, abstract of Tetrahedron Letters, 35(24), pp. 4211-4214, 1994.
R. G. Gould, Jr. et al., J. American Chemical Soc., 61, 2890 (1939).
C. C. Price et al., Organic Synthesis Collective vol. 3, pp. 272-275.
T. R. Kelly et al., Tetrahedron, 41, 3033-3036 (1985).
M. Nasa et al., Kokai Patent No. Hei 5(1993)-155858, published Jun. 22, 1993 (translation).
J. Chattopadhyay et al., Indian Journal of Chemistry, 29B, 98-100 (1990).
C. C. Price et al., J. American Chemical Soc., 68, 1204-1208 (1946).
A. J. Lin et al., J. Medicinal Chemistry, 21, 268-271 (1978).
H. Yoshizawa, PCT Patent Application WO 9523787, published Sep. 8, 1995 (abstract).
O. Prakash et al., Tetrahedron Letters, 35, 4211-4214 (1994).
Fortunak, et al; Preparation of Mappicine Ketones from Camptothecins: Chemistry of te Camptothecin E Ring; Tetrahedron Letters, vol. 35, No. 32, pp. 5763-5764, 1994.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Process for the preparation of halo-4-phenoxyquinolines does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of halo-4-phenoxyquinolines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of halo-4-phenoxyquinolines will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-766314

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.