Chemical Oxidation Studies of β-Hydroxy-sulfides withtris(4-Bromophenyl)aminium Hexachloroantimonate: Diastereoselective Sulfoxide Obtaining and Pinacol-Type Rearrangement
摘要:
The chemical oxidation of some beta-hydroxy-sulfides in the presence of tris(4-bromo-phenyl)aminium hexachloroantimonate (TBPA) is reported. The oxidation of 2-ethylsulfanyl-cyclohexan-1-ol (cis- and trans-) resulted the corresponding sulfoxides with good diastereoselectivity (d.e.; approximate to50%) and for 2-methyl-2-ethylsulfanyl-cyclohexan-1-ol and 2-ethylsulfanyl-1,2-diphenyl-ethanol, the corresponding nonsulfanylated ketones (61-75%) and ethyl ethanethiolsulfonate (51-65%) were obtained via oxidative cleavage and pinacol-type rearrangement.
Salt suitable for an acid generator and a chemically amplified resist composition containing the same
申请人:Yamaguchi Satoshi
公开号:US20070122750A1
公开(公告)日:2007-05-31
The present invention provides a salt of the formula (I):
wherein ring X represents monocyclic or polycyclic hydrocarbon group having 3 to 30 carbon atoms, and one or more hydrogen atom in the monocyclic or polycyclic hydrocarbon group is optionally substituted with alkyl group having 1 to 10 carbon atom, alkoxy group having 1 to 10 carbon atom, perfluoroalkyl group having 1 to 4 carbon atoms, hydroxyalkyl group having 1 to 10 carbon atoms or cyano group; Q
1
and Q
2
each independently represent fluorine atom or perfluoroalkyl group having 1 to 6 carbon atoms; and A
+
represents organic counter ion.
The present invention also provides a chemically amplified resist composition comprising the salt of the formula (I).
Interaction between the carbonyl group and a sulphur atom. Part 9. The relationship between conformation and ground- and excited-state interactions in some α-sulphur-substituted cycloalkanones
作者:Blanka Wladislaw、Hans Viertler、Paulo R. Olivato、Isabel C. C. Calegão、Vera L. Pardini、Roberto Rittner
DOI:10.1039/p29800000453
日期:——
Similarly, hyperconjugative interaction in the excited state is proposed to account for the bathochromic shift of the n→π* band, at 300 nm, of the same compounds. The shorter wavelength u.v. absorption band, at 250 nm, is assigned to charge transfer from sulphur to the carbonyl group owing to its dependence on the position of the 3p orbital of sulphur relative to the carbonyl group.