Reaction of Thiocarbonyl Compounds with Tributylphosphine
نویسندگان
چکیده
منابع مشابه
Less reactive dipoles of diazodicarbonyl compounds in reaction with cycloaliphatic thioketones – First evidence for the 1,3-oxathiole–thiocarbonyl ylide interconversion
Acyclic diazodicarbonyl compounds react at room temperature with cycloaliphatic thioketones, e.g. 2,2,4,4-tetramethyl-3-thioxocyclobutanе-1-one and adamantanethione, via a cascade process in which the key step is a 1,5-electrocyclization of the intermediate thiocarbonyl ylide leading to tetrasubstituted spirocyclic 1,3-oxathioles. The most reactive diazodicarbonyl compound was diazoacetylaceton...
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Lewis acid-catalyzed reactions of oxiranes with a variety of C=S compounds yield 1,3-oxathiolanes. The ring enlargement of monosubstituted oxiranes occurs regioselectively via cleavage of the O,C(3) bond of alkyl substituted oxiranes and the O,C(2) bond of phenyl oxirane. Furthermore, the reaction proceeds with inversion of the configuration at the center of the nucleophilic attack by the S-ato...
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Reaction of Pyo compounds with sodium hypoiodite.
It was noted early in the investigations of the Pyo compounds that treatment of Pyo I1 with an alkaline iodine solution resulted in the formation of a product which was markedly more active against Staphy1ococcu.s aureus than was the original substance. In t.hese cases, the activity of the product was about 10 times that of the starting material (1). Since it was known that this reagent has the...
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protein in vitro and also with body constituents in vivo. They assumed that allicin was not chemically bound with the SH groups of protein, but it was additionally bound forming a complex. Allicin was not liberated from the "com plex" by washing with water or saturated ammonium sulfate solution, but could be easily separated by extracting with ethanol in which allicin is easily soluble. When pr...
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1976
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.49.1721