Process for azoles (ring closure of nitro compounds)

Details Process for azoles (ring closure of nitro compounds) Process for azoles (ring closure of nitro compounds)

1976-10-14

1978-02-14

Demers, Arthur P.

Harness for working animal

260304R, 260307D, 542442, 542455, 542466, 542474, 542476, 548305, 548325, C07D41306, C07D26354, C07D27760

Patent

active

040740463

ABSTRACT:
Process for preparing known classes of 2-substituted azoles (I) and N-acylazolinones (II) by reacting carbon monoxide at elevated temperature and pressure in the presence of a cocatalyst composition, of which 5% palladium on carbon with a Lewis acid such as ferric chloride is representative, with a nitrogenous compound (III): ##STR1## to form the products (usually in admixture): ##STR2## where R is alkyl, alkenyl, aralkyl, aryl, styrl or ##STR3## R.sub.1 and R.sub.2 are hydrogen, alkyl, alkoxy, aryl, halo or, when taken together on adjacent carbon atoms, -CH.dbd.CH-CH.dbd.CH-; R.sub.4 may be alkyl, alkenyl, aralkyl, aryl, styryl, ##STR4## X is oxygen, sulfur or imino, Y is alkylene, alkenylene or arylene; and Z is nitro, azo or azoxy.

REFERENCES:
patent: 3461149 (1969-08-01), Hardy et al.
Elderfield, Heterocyclic Compounds, vol. 5, (1957), J. Wiley & Sons, N. Y., N. Y., pp. 507, 508.
Hardy et al. Tet. Letters 11 (1967) pp. 961-962.
Noller, Chem. of Organic Comps., W. B. Saunders Co., Philadelphia, 3rd ed. 1966, p. 42.

Affiliated with

Also associated with

Rating

Process for azoles (ring closure of nitro compounds) 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 azoles (ring closure of nitro compounds), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for azoles (ring closure of nitro compounds) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-525664