is present in pineapples. Urea, the major organicconstituentof urine and a widely used fertilizer, is a doubleamideofcarbonic acid. Acyl chlorides and anhydrides are the most reactive carboxylic acid derivatives and are useful chemical reagents, although they are not important functional groups in ...
organohalogen compound, any of a class of organic compounds that contain at least one halogen (fluorine [F], chlorine [Cl], bromine [Br], or iodine [I]) bonded to carbon. They are subdivided into alkyl, vinylic, aryl, and acyl halides. In alkyl halides all four bonds to the carbon ...
Phosphorus trichlorideThe most important of the three phosphorus chlorides; used in the production of organophosphorus compounds; converted primary and secondary alcohols into alkyl chlorides or carboxylic acids into acyl chlorides. Phosphoryl chlorideIt is used in the production of phosphate esters such ...
Furthermore, the use of acyl chlorides as acylating agents is an addi-tional source of chlorine-containing wastes.Acylation over acid molecular sievesIn the last few decades, several research teams have investigated the liquid-phase acylation of aromat-ics and heteroaromatics over acid zeolites ...
corresponding methyl 3-oxo-2-(arylhydrazono)butanoates 6 in DMFDMA [35,36,37], and their further hydrolysis led to 4-oxo-1-aryl-1,4-dihydropyridazine-3-carboxylic acids 8 [36,37]; then, 8 were converted into appropriate acid chlorides 9; finally, treatment with aromatic amines yielded ...