%0 Journal Article
%A Chin, Chong Shik
%A Lee, Hyungeui
%A Noh, Soyoung
%A Park, Hyeyun
%A Kim, Mieock
%D 2003
%T Carbon−Carbon Bond Formation between Adjacent
Alkenyl Ligands: η3-Allyl Iridium(III) and η4-Butadiene
Iridium(I) Complexes from a cis-Bis(alkenyl)
Iridium(III) Complex
%U https://acs.figshare.com/articles/journal_contribution/Carbon_Carbon_Bond_Formation_between_Adjacent_Alkenyl_Ligands_sup_3_sup_-Allyl_Iridium_III_and_sup_4_sup_-Butadiene_Iridium_I_Complexes_from_a_i_cis_i_-Bis_alkenyl_Iridium_III_Complex/3775422
%R 10.1021/om030090r.s001
%2 https://acs.figshare.com/ndownloader/files/5886186
%K NEt 3
%K PPh 3
%K CHCHCH
%K RC
%K alkenyl
%K bond
%K CHCH
%K ligand
%K ci
%K CH 3 CN
%K η 4
%K Iridium
%K NCCH
%K C 6 H 4 CH 3
%K Ir
%X A carbon−carbon bond is formed between the α-carbons of the alkenyl ligands of the cis-bis(ethenyl)iridium complex [Ir(−CHCH2)2(CH3CN)2(PPh3)2]+ (2) to produce the η3-allyl
complex [Ir(η3-CH3CHCHCH2)(NCCH3)2(PPh3)2]2+ (4) in the reaction of 2 with H+, and η4-butadiene complexes Ir(η4-CH2CHCHCH2)(A)(PPh3)2 (A = −CHCH-+NEt3 (6), −C⋮CR (7)) in reactions of 2 with terminal alkynes (RC⋮CH; R = H, Ph, and p-C6H4CH3) in the
presence of NEt3. The deuterium labeling experiments suggest an initial attack of H+ on
the β-carbon of an ethenyl ligand to lead to the C−C bond formation between the α-carbons
of the two alkenyl groups of 2 to produce 4.
%I ACS Publications