AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Convenient syntheses of S-aryldithioesters and thioamides are described: thus, thiols and amines are readily thioacylated with the S-borondithioester formed in situ, by the mild reaction of a dithioacid with 9-BBN. Key Words: Dithioacids9-BBNthioacylation.

Lithiated methyl N-phenyl-2-trimethylsilylethanimidothioate is regioselectively C-alkylated at -78-degrees-C but, at a higher temperature in the presence of 1 equiv. of butyllithium, it is converted into a lithiated ketenimine which can be protonated or alkylated to give new and stable silylated ketenimines

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Abstract1,4‐Addition of organo‐metal reagents to the title thioesters (I) and (IV) followed by thermal decomposition leads to ketenimine intermediates which are trapped in situ by organo‐lithium or magnesium compounds.

AbstractThe title imidothioesters (I) undergo 1,2‐addition with the allylic Grignard reagents (II) and (IV) and 1,4‐addition with the compounds (VI), (VIII) and (X).

The Diels‐Alder reaction of the diphenylisobenzofuran (I) or anthracene (IV) with diethyl vinylphosphonate (II) forms the adducts (III) and (V) respectively.

Die Allene (V), (IX), (XII), (XV), (XVII), (XIX) und (XXI) werden jeweils nach A) durch Zers. der entsprechenden Anthracenvorstufen gewonnen.

M. El Jazouli, S. Masson and A. Thuillier, J. Chem. Soc., Chem. Commun., 1985, 1598 DOI: 10.1039/C39850001598

Abstract After a short survey of the methods for the synthesis of dithioesters, reactions of these compounds with Grignard reagents, of their enethiolates, of α-oxodithioesters, conjugated and α-oxoketene dithioacetals as well as of N-phenyl-imido thioesters are discussed in detail. Applications of these reactions in syntheses of natural products are given.

La pyrolyse eclair d'adduits anthraceniques a conduit a des allenes fonctionnels reactifs dont on decrit la stabilite et les spectres a basse temperature (IR, RMN 1 H et 13 C)