6533b831fe1ef96bd1299870

RESEARCH PRODUCT

Palladium-Catalyzed Arylation of Linear and Cyclic Polyamines.

subject

description

Synthetic protocols for the palladium-catalyzed arylation of various linear and cyclic polyamines and polyoxapolyamines has been worked out. Pd(0) and Pd(II) complexes with such phosphine ligands as dppf, BINAP, PPF-OMe, P(tBu) 3 , 2-ditert-butylphosphino- 1,1'-biphenyl have been explored in the catalytic amination reactions. Monoamination of chloro-, bromo-, and iodoarenes with di-, tri-, and tetraamines have been carried out, condi- tions for di- and polyarylation of linear polyamines have been elaborated. Successful aryla- tion of 1,4,7,10-tetraazacyclododecane (cyclene) and 1,4,8,11-tetraazacyclotetradecane (cy- clam) have been conducted. Intramolecular diamination of dihaloarenes such as 1,2-dibromobenzene, 2,6-dichlorobromobenzene, 1,3-dibromobenzene, 1,8-dichloro- anthracene, 1,8-dichloroanthraquinone, 1,5-dichloroanthracene, and 1,5-dichloroanthra- quinone afforded corresponding polyazamacrocycles containing arene moieties. For the first time, a convenient one-pot synthesis of the face-to-face arranged bismacrocyclic systems has been carried out.