Detail of "2814-20-2"

Reference

2-Isopropyl-4-methyl-6-hydroxypyrimidine

2-Isopropyl-4-methyl-6-hydroxypyrimidine. Blackwell, Joseph T., III; Gasper, Larry, III (Ciba-Geigy Corp. , USA). U.S. US 4496728 A 29 Jan 1985, 6 pp. (English). (United States of America). CODEN: USXXAM. CLASS: ICM: C07D239-36. NCL: 544319000. APPLICATION: US 82-419842 20 Sep 1982. DOCUMENT TYPE: Patent CA Section: 45 (Industrial Organic Chemicals, Leather, Fats, and Waxes) Section cross-reference(s): 5, 28 Compds. I (R = Pr, iso-Pr, or cyclopropyl), useful as chem. intermediates, are prepd. There are some commonly used reagents like 2814-20-2 in this article. by the ring-forming reaction resulting from the introduction of an alkali-neutralized methanolic soln. of an amidine H2NCR:NH.HCl at -5 to +15° together with Me or Et acetoacetate into the first stage of a multistage reactor comprising a series of stages connected by restricted-flow orifices which prevent backflow, passing the mixt. into the second reaction stage, adjusting the pH to 11.0-13.0 and maintaining 35-45°, passing the mixt. at the same pH and temp. into 31 successive stage, and holding the mixt. in each stage for 2-8 min until ring closure is complete in the last stage.Chemical with cas number 2814-20-2 also plays role. Thus, I (R = iso-Pr) [2814-20-2] was prepd. by the above process in a 10-stage reactor, giving a 95% yield. ..

Degradation of high concentrations of a phosphorothioic ester by hydrolase

Degradation of high concentrations of a phosphorothioic ester by hydrolase. Honeycutt, R.; Ballantine, L.; LeBaron, H.; Paulson, D.; Seim, V.; Ganz, C.; Milad, G. (Ciba-Geigy Corp., Greensboro, NC 27409, USA). ACS Symp. Ser., 259(Treat. Disposal Pestic. Wastes), 343-52 (English) 1984. CODEN: ACSMC8. ISSN: 0097-6156. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) Greenhouse soil was treated at 500, 1000, 2000 and 5000 ppm with diazinon [333-41-5] 4. Parathion hydrolase [58693-64-4] was added to the soil to det. the efficacy of the enzyme to rapidly degrade diazinon during a spill situation. The half-life of the diazinon in the 500 ppm treatment without enzyme present was 9.4 days while the half-life of diazinon in the 500 ppm treatment with enzyme present was 1 h. The half-lives of diazinon in the 1000, 2000 and 5000 ppm treatments with enzyme present were 1.2, 5.6 and 128 h (5.3 days), resp. Thus, parathion hydrolase can be used effectively to rapidly reduce large concns. of diazinon in soil. At diazinon concns. >2000 ppm the enzyme is less effective. Parathion hydrolase is readily sol. in water, is reasonably stable and can be easily handled in the field. Oxypyrimidine [2814-20-2] is a degrdn. product of diazinon.