Vanishing aromaticity: A chiral ruthenium complex catalyzes the hydrogenation of 2,6‐ or 2,7‐disubstituted naphthalenes to give chiral tetralins with up to 92 % ee. The chiral catalyst is applicable to the regio‐ and enantioselective reduction of 6‐substituted 2‐alkoxynaphthalenes and preferentially hydrogenates the alkoxy‐substituted arene rings.
NOVEL SULFONIUM SALT COMPOUND, METHOD FOR PRODUCING THE SAME, AND PHOTOACID GENERATOR
申请人:DSP GOKYO FOOD & CHEMICAL CO., LTD.
公开号:US20150293445A1
公开(公告)日:2015-10-15
Provided is a sulfonium salt compound represented by the following general formula (I):
where R
1
and R
2
each denote the same or a different alkyl group having 1 to 18 carbon atoms, R
3
and R
4
each denote the same or a different alkyl group having 1 to 10 carbon atoms, and X
−
denotes a sulfone imide anion or a perfluoroalkanesulfonic acid anion, wherein the substituents denoted by R
3
O and R
4
O are each located at an arbitrary position selected from the 2-position to the 8-position of the naphthyl group.