CAS: 234443-21-1; 4-Bromo-3,3,4,4-Tetrafluorobutan-1-Ol

相似化合物

18599-20-7 222725-20-4 155957-60-1

4-Bromo-3,3,4,4-Tetrafluorobutanoic Acid置于dimethyl Sulfide Borane体系中,用 四氢呋喃 用作溶剂,化学反应 4.0H,以84%的收率获得4-溴-3,3,4,4-四氟-1-丁醇
参考文献:Cyclizations Of 5-Hexenyl,6-Heptenyl,7-octenyl,And 8-Nonenyl Radicals. The Kinetic And Regiochemical Impact Of Fluorine And Oxygen Substituents
标题:Cyclizations Of 5-Hexenyl,6-Heptenyl,7-octenyl,And 8-Nonenyl Radicals. The Kinetic And Regiochemical Impact Of Fluorine And Oxygen Substituents
摘要:Using Competition Kinetic Methodology,Rate Constants For Cyclizations Of A Series Of Hydrofluorocarbon (Hfc) And Ether 5-Hexenyl,6-Heptenyl,And 7-octenyl Radicals Have Been Determined. Remarkably Large Rate Constants (>10(7) S(-1)) Have Been Observed For 6-Exo-Cyclizations Of 1,1,2,2-Tetrafluoro-And 1,1,2,2,3,3,4,4,-octafluoro-6-Heptenyl Radicals (>10(3) Those Of Analogous Hydrocarbon Radicals),Whereas Hfc Hexenyl And Heptenyl Ethers Exhibit Lower Cyclization Reactivity,As Do Hfc 7-octenyl Radical Systems,Which Cyclize In An Endo Manner. Hfc 8-Nonenyl Radicals Were Not Observed To Cyclize. The Results Can Be Rationalized In Terms Of Transition State Polar Influences,Though Other Factors May Also Play Significant Roles.
Doi:10.1021/jo990544N

专利信息

专利号:US-9255079-B2
优先权日:2009-12-10
标 题 :Photoacid generators and photoresists comprising same
发明人：LI MINGQI; AQAD EMAD; LIU CONG; MATTIA JOSEPH; XU CHENG-BAI; BARCLAY GEORGE G
权利人:LI MINGQI; AQAD EMAD; LIU CONG; MATTIA JOSEPH; XU CHENG-BAI; BARCLAY GEORGE G; ROHM & HAAS ELECT MAT
摘要:New methods are provided for synthesis of photoacid generator compounds (“PAGsâ€?), new photoacid generator compounds and photoresist compositions that comprise such PAG compounds. In a particular aspect, sulfonium-containing (S+) photoacid generators and methods of synthesis of sulfonium photoacid generators are provided.

专利号:US-9348220-B2
优先权日:2010-03-31
标 题 :Photoacid generators and photoresists comprising same
发明人：AQAD EMAD; LI MINGQI; XU CHENG-BAI; LIU CONG
权利人:AQAD EMAD; LI MINGQI; XU CHENG-BAI; LIU CONG; ROHM & HAAS ELECT MAT
摘要:New methods are provided for synthesis of photoacid generator compounds (“PAGsâ€?), new photoacid generator compounds and photoresist compositions that comprise such PAG compounds. In a particular aspect, photoacid generators that comprise 1) a SO 3 − moiety; 2) one or more fluorinated carbons; and 3) one or more of the fluorinated carbons either directly or indirectly substituted by an ester keto group.