TY - JOUR
T1 - Ruthenium-catalyzed meta sulfonation of 2-phenylpyridines
AU - Saidi, Ourida
AU - Marafie, Jameel
AU - Ledger, Araminta E.W.
AU - Liu, Po Man
AU - Mahon, Mary F.
AU - Kociok-Köhn, Gabriele
AU - Whittlesey, Michael K.
AU - Frost, Christopher G.
PY - 2011/12/7
Y1 - 2011/12/7
N2 - A selective catalytic meta sulfonation of 2-phenylpyridines was found to occur in the presence of (arene)ruthenium(II) complexes upon reaction with sulfonyl chlorides. The 2-pyridyl group facilitates the formation of a stable Ru-C aryl σ bond that induces a strong para-directing effect. Electrophilic aromatic substitution proceeds with the sulfonyl chloride to furnish a sulfone at the position meta to the chelating group. This new catalytic process offers access to atypical regioselectivity for reactions involving chelation-assisted cyclometalation.
AB - A selective catalytic meta sulfonation of 2-phenylpyridines was found to occur in the presence of (arene)ruthenium(II) complexes upon reaction with sulfonyl chlorides. The 2-pyridyl group facilitates the formation of a stable Ru-C aryl σ bond that induces a strong para-directing effect. Electrophilic aromatic substitution proceeds with the sulfonyl chloride to furnish a sulfone at the position meta to the chelating group. This new catalytic process offers access to atypical regioselectivity for reactions involving chelation-assisted cyclometalation.
UR - http://www.scopus.com/inward/record.url?scp=82555187153&partnerID=8YFLogxK
U2 - 10.1021/ja208286b
DO - 10.1021/ja208286b
M3 - Article
C2 - 22047022
AN - SCOPUS:82555187153
SN - 0002-7863
VL - 133
SP - 19298
EP - 19301
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 48
ER -