Notes - Derivatives of Ferrocene V. The Preparation of Some N-Substituted Ferrocenecarboxamides

Acylurea Pyrolysis - Thermolysis of N,N′-Disubstituted Ferrocenoylureas as a New Way to N-Monosubstituted Ferrocenecarboxamides

“…5 Moreover, the transformation of active esters has been reported. 6,7 The reaction of isocyanates with aromatic hydrocarbons according to Leuckart 8,9 is applied to ferrocene 10 as well as to lithium cyclopentadienide 11 , followed by the transformation with FeCl 2 to the corresponding ferrocenecarboxamides. Several chiral ferrocenecarboxamides were obtained via (-)-sparteine-mediated directed ortho-lithiation of ferrocenes.…”

Friedel-Crafts Acylations. Unit Processes Review

“…Vigorous studies of the kinetics of benzoylation have been continued by Brown and coworkers (75,76,57). The rates varied with the nature of the solvent.…”

“…Other nonroutine acylating reagents include benzoyloxytrichlorosilane (106), tris (bromomethyl) acetyl chloride (67), aryl-and alkylisocyanates (76), acetylsulfenyl chloride (14), and [/3-(/>-methoxyphenyl)ethylamino Jacetonitrile hydrochloride and its propyl analog (71). The current interest in the chemistry of sandwich-type compounds is reflected in the number of acylations of ferrocenes (45, 48, 76, 79, 90), of osmocene and ruthenocene (75), of cyclopentadienylmanganese tricarbonyl (30), and in the failure reported with mesitylenechromium tricarbonyl (69).…”

New Synthesis of Ferrocene Monocarboxylic Acid and Systematic Studies on the Preparation of Related Key-Intermediates

“…PCl 3 [25], PCl 5 [7], thionyl chloride or oxalyl chloride [18,26], have been used, without problems. PCl 3 was found to be ineffective [7], thionyl chloride has sometimes been used but with poor results, PCl 5 is frequently used and convenient in petroleum ether [1,29] or dichloromethane as solvents, but decomposition may occur [31,46]. PCl 3 was found to be ineffective [7], thionyl chloride has sometimes been used but with poor results, PCl 5 is frequently used and convenient in petroleum ether [1,29] or dichloromethane as solvents, but decomposition may occur [31,46].…”