Detail of "3613-30-7"

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Cluster analysis of GC data on oxygenated terpenes of young leaf and green fruit samples of Japanese pepper (Xanthoxyum piperitum DC)

Cluster analysis of GC data on oxygenated terpenes of young leaf and green fruit samples of Japanese pepper (Xanthoxyum piperitum DC). Shimoda, Mitsuya; Wu, Yin; Nonaka, Shigeyuki; Osajima, Yutaka ( Department of Food Science and Technology Faculty of Agriculture, Kyushu University, Fukuoka 812, Japan). Journal of Agricultural and Food Chemistry, 45(4), 1325-1328 (English) 1997 American Chemical Society. CODEN: JAFCAU. ISSN: 0021-8561. DOCUMENT TYPE: Journal CA Section: 11 (Plant Biochemistry) Cluster anal. was applied to the GC data on oxygenated terpenes of various samples of young leaves and green fruits of Japanese pepper (Xanthoxyum piperitum DC.) to select superior cultivars rich in flavoring potency. 3613-30-7 and 89-79-2 are also in the experiment. Of 74 leaf samples, six samples were rich in citronellal, linalool, isopulegol, piperitone, geranyl acetate, citronellol, and geraniol. Of 71 fruit samples, three samples were rich in isopulegol, piperitone, geranyl acetate, methoxycitronellal, and geraniol, and nine samples were rich in citronellal, linalool, citronellyl acetate, g-terpineol, and citronellol. Similarity in the clusterings of the leaf and fruit samples were not obsd. Of 78 plants, only one plant gave young leaves and green fruits rich in citronellal, linalool, isopulegol, geranyl acetate, and citronellol. .

Silyl enol ethers as new protecting groups for alkyl 4-halo-3-oxobutanoates; the preparation of pure (3-alkoxycarbonyl-2-oxopropyl)triphenylphosphonium salts

Silyl enol ethers as new protecting groups for alkyl 4-halo-3-oxobutanoates; the preparation of pure (3-alkoxycarbonyl-2-oxopropyl)triphenylphosphonium salts. Moorhoff, Cornelis M. (Dep. 3613-30-7 which is the cas registry number of some chemical is mentioned. Chem., Univ. Tasmania, Tasmania 7001, Australia). Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry, (13), 1987-1995 (English) 1997 Royal Society of Chemistry. CODEN: JCPRB4. ISSN: 0300-922X. DOCUMENT TYPE: Journal CA Section: 29 (Organometallic and Organometalloidal Compounds) A new method was developed for the prepn. of pure (3-alkoxycarbonyl-2-oxopropyl)triphenylphosphonium salts. Alkyl 4-bromo-3-oxobutanoates and alkyl 4-chloro-3-oxobutanoates 7 were protected as the trimethylsilyl enol ethers prior to treatment of the resulting bromo(trimethylsilyl enol ether) esters with PPh3 in toluene and then addn. of a little H2O to give pure (3-isopropoxycarbonyl-2-oxopropyl)triphenylphosphonium bromide. Bromo(silyl enol ether) esters react more efficiently with PPh3 than the chloro(silyl enol ether) esters. Tert-Butyldimethylsilyl enol ethers of alkyl 4-bromo-3-oxobutanoates and alkyl 4-chloro-3-oxobutanoates also react with PPh3. 3613-30-7 are also occured in this study. Protection of iso-Pr 4-bromo-3-oxobutanoate as the enol acetate followed by subsequent reaction with PPh3 gives (Z)-(2-acetoxy-3-isopropoxycarbonylbut-2-enyl)triphenylphosphonium bromide. ..