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Ruthenium‐Capping of Di‐ and Tetraethynylbiphenyls
Author(s) -
GómezLor Berta,
Santos Amelia,
Ruiz Marta,
Echavarren Antonio M.
Publication year - 2001
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200109)2001:9<2305::aid-ejic2305>3.0.co;2-t
Subject(s) - ruthenium , chemistry , deprotonation , derivative (finance) , catalysis , medicinal chemistry , coupling reaction , stereochemistry , organic chemistry , ion , financial economics , economics
The di‐ and tetraalkynyl biphenyls 3 and 5 have been synthesized from the tetrabromo derivative 1 by using Pd‐catalyzed cross‐coupling reactions. The reaction of 3 or 5 with cis ‐[RuCl 2 (dppe) 2 ] ( 8 ) affords vinylidene ruthenium complexes, which were deprotonated with Et 3 N to give the terminal σ‐alkynylruthenium derivatives 9−12 . The reaction of 3 or 5 with [Ru(CO)ClH(PPh 3 ) 3 ] ( 13 ) gave the corresponding di‐σ‐alkenyl ruthenium complexes 14 and 15 .