Herein we reported an efficient palladium-catalyzed enantioselective arylation of both alkyl and aryl sulfenate anions to deliver various chiral sulfoxides in good yields (up to 98%) with excellent enantioselectivities (up to 99% ee) by the use of our developed chiral O,P-ligands (PC-Phos). PC-Phos are easily prepared in shortsteps from inexpensive commercially available starting materials. The single-crystal
SULFONIUM SALT, PHOTOACID GENERATOR, PHOTOCURABLE COMPOSITION, AND CURED PRODUCT THEREOF
申请人:SAN-APRO LTD.
公开号:US20190300476A1
公开(公告)日:2019-10-03
A sulfonium salt is formed of a sulfonium cation selected from a group indicated by general formulas (1), (2), and (3) and a gallate anion represented by formula (a). A photoacid generator is characterized in that said sulfonium salt is contained therein. An energy-ray curable composition contains the acid generator and a cationic polymerizable compound. A cured product is formed by curing these substances.
SULFONIUM SALT, PHOTOACID GENERATOR, CURABLE COMPOSITION, AND RESIST COMPOSITION
申请人:SAN-APRO LTD.
公开号:US20210147352A1
公开(公告)日:2021-05-20
The sulfonium salt has high photosensitivity to i-rays and high compatibility with cationically polymerizable compounds such as epoxy compounds, and is excellent storage stability in formulations containing such compounds. The sulfonium salt is represented by general formula (1). In formula (1), R represents an alkyl group or an aryl group; substituents, R1 to R5, each independently represent an alkyl group, a hydroxy group, an alkoxy group, an aryl group, an aryloxy group, a hydroxy(poly)alkyleneoxy group, or a halogen atom; R6 to R9 each independently represent an alkyl group, an aryl group, or a hydrogen atom; m
1
to m
5
each represent the number of occurrences of each of R1 to R5, m
1
and m
4
represent an integer of 0 to 3, m
2
and m
5
represent an integer of 0 to 4, m
3
represents an integer of 0 to 5, and X
−
represents a monovalent polyatomic anion.