N,N?-Diacylated imidazolidines and hexahydropyrimidines
作者:O. A. Luk'yanov、G. V. Pokhvisneva、T. V. Ternikova
DOI:10.1007/bf00703698
日期:1994.8
A method for the preparation ofN-monoacyl imidazolidines and hexahydropyrimidines (as hydrochlorides) by interaction of monoacylated derivatives of ethylenediamine and trimethylenediamine with chloromethyl methyl ether was developed. Also a method for the preparation ofN,N′-diacylimidazolidines and hexahydropyrimidines either by acylation of their monoacyl derivatives or by reaction of the correspondingN
A variety of medium‐sized cycloalkynes were efficiently synthesized by the double Nicholas reaction of cobalt complex and bis(hetero)substituted acyclic compound. The alkyne moiety within the ring has a unique bent structure and high reactivity toward cycloaddition reactions. Furthermore, preparation of multifunctionalized alkynes was achieved by embedding the cycloalkyne within a peptide chain.