Elemental fluorine. Part 19: Electrophilic fluorination of hexyl derivatives bearing electron withdrawing groups
作者:Richard D. Chambers、Mandy Parsons、Graham Sandford、Emmanuelle Thomas、Jelena Trmcic、John S. Moilliet
DOI:10.1016/j.tet.2006.03.113
日期:2006.7
Reaction of a series of model hexyl derivatives of the form C6H13–X (X=Cl, Br, I, CO2Me, COMe, CHO) with both elemental fluorine and Selectfluor™ was studied in order to assess the impact of electron withdrawing functional groups upon fluorination of an alkyl chain. Fluorination generally occurs at secondary sites, with a slight preference for those that are furthest removed from the electron withdrawing
研究了一系列形式为C 6 H 13 –X(X = Cl,Br,I,CO 2 Me,COMe,CHO)的模型己基衍生物与元素氟和Selectfluor™的反应,以评估氟的影响。烷基链氟化时的吸电子官能团。氟化通常发生在次要位置,与亲电子取代过程一致,略微偏爱从吸电子基团离得最远的位置,尽管在大多数情况下会获得氟化产物的混合物。
Boron trifluoride promoted reactions of n-haloelectrophiles with alkenes
作者:Gene E. Heasley、J. Mark Janes、Stephen R. Stark、Brian L. Robinson、Victor L. Heasley、Dale F. Shellhamer
DOI:10.1016/s0040-4039(00)94744-0
日期:1985.1
N-Haloelectrophiles react with alkenes in the presence of boron rifluoride etherate to give halofluorides and N-halo adducts.
PREPARATION OF SELECTIVELY FLUORINATED ORGANIC COMPOUNDS
申请人:F2 Chemicals Limited
公开号:EP1165464B1
公开(公告)日:2003-08-20
[EN] PREPARATION OF SELECTIVELY FLUORINATED ORGANIC COMPOUNDS<br/>[FR] PREPARATION DE COMPOSES ORGANIQUES FLUORES DE FAÇON SELECTIVE
申请人:F2 CHEMICALS LIMITED
公开号:WO2000058241A1
公开(公告)日:2000-10-05
The invention provides a method of selectively fluorinating an organic compound at an unactivated saturated sp3 hybridised carbon atom, the method comprising reacting the compound with a fluorinating agent containing an N-F bond. The carbon atom may be, for example, a tertiary carbon atom or a secondary carbon atom. The carbon atom may form part of a cyclic structure. The fluorinating agent may be any electrophilic fluorinating agent containing an N-F bond. Preferably, the fluorinating agent is an N-fluorinated diazoniabicycloalkane.
[EN] PREPARATION OF SELECTIVELY FLUORINATED ORGANIC COMPOUNDS<br/>[FR] PREPARATION DE COMPOSES ORGANIQUES FLUORES DE MANIERE SELECTIVE
申请人:F2 CHEMICALS LTD
公开号:WO2001028959A1
公开(公告)日:2001-04-26
The present invention provides a method of selectively fluorinating a carbon-hydrogen bond at an unactivated saturated sp3 hybridised carbon atom of an organic compound, the method including reacting the organic compound with elemental fluorine gas, characterised in that the reaction is carried out in the presence of a basic compound. The method enables the selective transformation of carbon-hydrogen bonds to carbon-fluorine bonds in molecules where the hydrogen atom is attached to a fully saturated unactivated sp3 hybridised carbon atom such as a tertiary carbon atom found in many saturated hydrocarbon compounds and steroid derivatives. Advantageously, the method may be carried out at or just below room temperature.