期刊
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
卷 -, 期 20, 页码 3919-3922出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b205875h
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The substituted m-terphenyl 2,4,6-triphenylbromobenzene (2Br) reacts cleanly with two equivalents of n-butyllithium in diethyl ether/hexane solution to produce the dilithiated species 2Li(2). Treatment of 2Li(2) with dialkylcarbodiimides (RN=C=NR, R = isopropyl or cyclohexyl) followed by aqueous work-up of the reaction mixture results in the formation of sterically hindered bifunctional amidines 5H(2) and 6H(2). Two bis-amidine derivatives were crystallographically characterised. Compound 5H(2) reacts readily with trimethylaluminium to form a novel dialkylaluminium bis-amidinate complex 5[AlMe2](2).
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