Studies of reactions leading to sulfine formation. 6. Base-catalyzed decomposition of di-9-fluorenyl sulfoxide
作者:John L. Kice、Lidia Kupczyk-Subotkowska
DOI:10.1021/jo00004a018
日期:1991.2
When treated with CH3ONa in CH3OH-CH2Cl2, di-9-fluorenyl sulfoxide (3) undergoes elimination readily to afford 9-thiofluorenone S-oxide (4) and fluorene (eq 2). Comparison of the rate of the elimination to the rate of disappearance in the presence of CD3OD of the H-1 NMR signal for the 9-H in 3 shows that the mechanism of this sulfine-forming elimination is (E1cB)rev, the rate of cleavage of the intermediate alpha-sulfinyl carbanion 7 to give 4 and a 9-fluorenyl carbanion being over 100 times slower than the rate at which 7 is protonated to regenerate 3. The (E1cB)rev behavior of this elimination is contrasted with the (E1cB)rev/(E1cB)irrev borderline behavior of the elimination of diarylmethyl (arylmethyl)sulfonyl sulfoxides 1, 2 and a reason for this at first sight unexpected difference in behavior is presented.
ORGANIC LIGHT-EMITTING DEVICE AND DISPLAY APPARATUS
申请人:Iwasaki Yohei
公开号:US20090082439A1
公开(公告)日:2009-03-26
An organic light-emitting device adapted for coating and having good emission efficiency and luminance. The organic light-emitting device employs an anode, a cathode, and a layer including an organic compound sandwiched between the anode and cathode. The layer containing the organic compound includes a bisfluorene compound represented by General Formula [1] below.
wherein in Formula [1], A is a substituted or unsubstituted alkylene group, a substituted or unsubstituted cycloalkylene group, a substituted silylene group, a substituted germylene group, an oxygen atom, and a sulfur atom.
US7723915B2
申请人:——
公开号:US7723915B2
公开(公告)日:2010-05-25
US8673885B1
申请人:——
公开号:US8673885B1
公开(公告)日:2014-03-18
Bergmann; Hervey, Chemische Berichte, 1929, vol. 62, p. 915