Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1987-05-21
1988-09-20
Lee, Mary C.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
546193, 546275, 546281, 546291, 546309, 546336, 540481, 540597, C07D21384, C07D21371, C07D21368, C07D40106
Patent
active
047727136
ABSTRACT:
Disclosed are compounds of the formula ##STR1## wherein R.sub.1 and R.sub.2 independently are H or C.sub.1-8 -alkyl or together are C.sub.2-7 -alkylene forming a ring with the connecting N-atom; X is CN, halo, C.sub.6-10 -arylsulfonyl, C.sub.6-10 -arylsulfinyloxy, C.sub.6-10 -aryloxy, C.sub.6-10 -arylthio or C.sub.1-8 -alkylsulfonyloxy or nitro, and Y is the anion of an acid having a pK.sub.a of about 3 or less.
These compounds are intermediates in the preparation of 4-substituted pyridines.
REFERENCES:
patent: 2857310 (1958-10-01), Heininger
patent: 3079394 (1963-02-01), Dowbenko
patent: 3235449 (1966-02-01), Thomas et al.
patent: 3260723 (1966-07-01), L'Italien et al.
patent: 3689470 (1972-09-01), Shachat et al.
patent: 4158093 (1979-06-01), Bailey et al.
patent: 4220785 (1980-09-01), Oude Alink et al.
Klingsberg, Erwin, "Heterocyclic Compounds, Pyridine and Derivatives", Part 1, Chaptr. 1 & 2, Part 2, Chaptr. 3-8, Interscience Pub., N.Y. 1960.
Bjorkman Dale A.
Lee Mary C.
Nepera Inc.
LandOfFree
Quaternary pyridine salts useful for preparation of 4-substitute does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Quaternary pyridine salts useful for preparation of 4-substitute, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quaternary pyridine salts useful for preparation of 4-substitute will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1749454