Detail of "432-24-6"

Reference

Dynamics of the volatile organic substances associated with cyanobacteria and algae in a eutrophic shallow lake

Dynamics of the volatile organic substances associated with cyanobacteria and algae in a eutrophic shallow lake. Juettner, Friedrich (Inst. Chem. Pflanzenphysiol., Univ. Tuebingen, Tuebingen D-7400, Fed. Rep. Ger.). Appl. Environ. Microbiol., 47(4), 814-20 (English) 1984. CODEN: AEMIDF. ISSN: 0099-2240. DOCUMENT TYPE: Journal CA Section: 61 (Water) The volatile substances present in a eutrophic shallow lake were detd. qual. and quant. during the growing season, allowing a 1st-time anal. of the dynamics of these compds. in a water body. The major compds. were b-cyclocitral [432-25-7], a-cyclocitral [432-24-6], b-ionone [79-77-6], 1,3,3-trimethylcyclohexene [503-47-9], 2,2,6-trimethylcyclohexanone [2408-37-9], 2,6,6-trimethylcyclohex-2-en-1-one [20013-73-4], eucalyptol [470-82-6], geosmin [19700-21-1], 2 argosmin isomers, pent-1-en-3-ol [616-25-1], pent-1-en-3-one [1629-58-9], heptadec-1-ene [6765-39-5], heptadec-cis 5-ene [65214-06-4], cis-1,8-heptadecadiene [56134-02-2], decanal [112-31-2], and hexanal [66-25-1]. Most of the substances have not been detected before in natural waters. The occurrence of geosmin, the argosmin isomers, heptadec-cis 5-ene, and an unknown sesquiterpene could clearly be correlated with the appearance of Aphanizomenon gracile, as could the occurrence of b-cyclocitral with the appearance of Microcystis wesenbergii. The data indicate that a rapid metab. or the elimination of these compds. occurs in lake water.

Total synthesis of (±)-nimbonone and (±)-12-ethyl-13-methoxy-8,11,13-podocarpatriene

Total synthesis of (±)-nimbonone and (±)-12-ethyl-13-methoxy-8,11,13-podocarpatriene. Zhang, Cheng Lu; Bie, Ping Yan; Peng, Xuan Jia; Pan, Xin Fu ( Department of Chemistry, National Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, Peop. Rep. China).Some commonly used reagents like 432-24-6 is used in this experiment. Chinese Chemical Letters, 13(10), 935-936 (English) 2002 Chinese Chemical Society. CODEN: CCLEE7.Several substances with their cas registry numbers 485805-44-5 and 219690-65-0 may be metioned in this study. ISSN: 1001-8417. DOCUMENT TYPE: Journal CA Section: 30 (Terpenes and Terpenoids) A facile total synthetic route to (±)-nimbonone (I, X = O) and (±)-12-ethyl-13-methoxy-8,11,13-podocarpatriene (I, X = H2) was developed. The Wittig reaction of a-cyclocitral with (3-methoxybenzyl)triphenylphosphonium and intramol. cyclization with BF3·Et2O in the synthetic progress were applied. In order to induce the Et substituent, Fiedel-Crafts acetylation and then decarbonylation had been employed. ..