[EN] ALKYLSULFANYL-BENZENES AS FRAGRANCE COMPOUNDS<br/>[FR] ALKYLSULFANYL-BENZENES UTILISES EN TANT QUE COMPOSES DE PARFUM
申请人:GIVAUDAN SA
公开号:WO2004056765A1
公开(公告)日:2004-07-08
Alkylsulfanyl-benzenes of the formula (I) wherein the bond between C1 and C2 is a single bond; or the bond between C1 and C2 together with the dotted line is a double bond, and R1 to R5 have the meaning as described in the specification. The compounds are useful in flavours and fragrances.
Alkylsulfanyl-benzenes of the formula (I) wherein the bond between C
1
and C
2
is a single bond; or the bond between C
1
and C
2
together with the dotted line is a double bond, and R
1
to R
5
live the meaning as described in the specification. The compounds are useful in flavours and fragrances.
Nucleophilic aromatic substitution reaction of nitroarenes with alkyl- or arylthio groups in dimethyl sulfoxide by means of cesium carbonate
作者:Azusa Kondoh、Hideki Yorimitsu、Koichiro Oshima
DOI:10.1016/j.tet.2005.11.073
日期:2006.3
Treatment of nitroarenes having electron-withdrawinggroups at the ortho or para position with alkanethiol in the presence of cesium carbonate in dimethyl sulfoxide at 25 °C leads to nucleophilic displacement of the nitro group with the alkylthio group. Cesium carbonate is superior to other bases such as potassiumcarbonate, sodium carbonate, and triethylamine. The cesium-mediated nucleophilic aromatic