[EN] METHODS FOR PRODUCING ARYLSULFUR PENTAFLUORIDES<br/>[FR] PROCÉDÉS DE PRODUCTION DE PENTAFLUORURES DE SOUFRE ARYLÉS
申请人:IM & T RES INC
公开号:WO2010014665A1
公开(公告)日:2010-02-04
Novel methods for preparing arylsulfur pentafluorides are disclosed. Arylsulfur halotetrafluoride is reacted with a fluoride source under hydrous conditions to form an arylsulfur pentafluoride. The purification method is also disclosed.
Novel processes for preparing arylsulfur pentafluorides are disclosed. Processes include reacting at least one aryl sulfur compound with a halogen and a fluoro salt to form an arylsulfur halotetrafluoride. The arylsulfur halotetrafluoride is reacted with a fluoride source to form a target arylsulfur pentafluoride.
A Practical and Stereocontrolled Synthesis of a Versatile 1.BETA.-Methylcarbapenem Intermediate.
作者:Kozo ODA、Akira YOSHIDA
DOI:10.1248/cpb.45.1439
日期:——
S-[2-(Dialkylaminocarbonyl)phenyl](2R)-2-[(3S, 4S)-3-[(1R)-1-(tert-butyldimethylsilyloxy)ethyl]-2-oxo-4-azetidinyl]thiopropionate (11), useful intermediates for the synthesis of 1β-methylcarbapenems including 1β-methylthienamycin, were prepared in a highly stereoselective manner by the reaction of E-1-(tert-butyldimethylsilyloxy)-1-[2-(dialkylaminocarbonyl)phenylthio]-1-propene (10) with commerically available (3S, 4R)-3-[(1R)-1-(tert-butyldimethylsilyloxy)ethyl]-4-acetoxyazetidin-2-one (6) in the presence of zinc chloride catalyst. The diethylaminocarbonyl derivative (11b) was particularly convenient for practical production because of its highly crystalline nature.
Process for producing arylsulfur halotetrafluorides
申请人:UBE Industries, Ltd.
公开号:EP2468722A1
公开(公告)日:2012-06-27
Novel processes for preparing arylsulfur pentafluorides are disclosed. Processes include reacting at least one aryl sulfur compound with a halogen and a fluoro salt to form an arylsufur halotetrafluoride. The arylsulfur halotetrafluoride is reacted with a fluoride source to form a target arylsulfur pentafluoride.
Chemistry of sulfenic acids. 7. Reason for the high reactivity of sulfenic acids. Stabilization by intramolecular hydrogen bonding and electronegativity effects
作者:Franklin A. Davis、Linda A. Jenkins、Robert L. Billmers