Triol-promoted activation of C-F bonds: Amination of benzylic fluorides under highly concentrated conditions mediated by 1,1,1-tris(hydroxymethyl)propane

被引:28
作者
Champagne, Pier Alexandre [1 ]
Saint-Martin, Alexandre [1 ]
Drouin, Melina [1 ]
Paquin, Jean-Francois [1 ]
机构
[1] Univ Laval, Dept Chem, PROTEO, CCVC, Quebec City, PQ G1V 0A6, Canada
基金
加拿大自然科学与工程研究理事会; 加拿大创新基金会;
关键词
C-F bond activation; highly concentrated conditions; nucleophilic substitution; hydrogen bond; organofluorine; triol; PALLADIUM-CATALYZED SUBSTITUTION; ALKYL FLUORIDES; GAS-PHASE; HYDRODEFLUORINATION; REAGENTS; CLEAVAGE;
D O I
10.3762/bjoc.9.283
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Activation of the C-F bond of benzylic fluorides was achieved using 1,1,1-tris(hydroxymethyl)propane (2) as a hydrogen bond-donating agent. Investigations demonstrated that hydrogen bond-donating solvents are promoting the activation and hydrogen bond-accepting ones are hindering it. However, the reaction is best run under highly concentrated conditions, where solvents cannot interfere with the interaction between the organofluorine compound and the triol. Various benzylic fluorides react with secondary amines or anilines to form benzylic amines in good yields.
引用
收藏
页码:2451 / 2456
页数:6
相关论文
共 24 条
[1]   Catalytic Hydrodefluorination of Fluoromethanes at Room Temperature by Silylium-ion-like Surface Species [J].
Ahrens, Mike ;
Scholz, Gudrun ;
Braun, Thomas ;
Kemnitz, Erhard .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2013, 52 (20) :5328-5332
[2]   C-F Bond Activation in Organic Synthesis [J].
Amii, Hideki ;
Uneyama, Kenji .
CHEMICAL REVIEWS, 2009, 109 (05) :2119-2183
[3]   Metal free and selective activation of one C-F bond in a bound CF3 group [J].
Azhakar, Ramachandran ;
Roesky, Herbert W. ;
Wolf, Hilke ;
Stalke, Dietmar .
CHEMICAL COMMUNICATIONS, 2013, 49 (18) :1841-1843
[4]   SN2′ Reaction of Allylic Difluorides with Lithium Amides and Thiolates [J].
Bergeron, Maxime ;
Guyader, David ;
Paquin, Jean-Francois .
ORGANIC LETTERS, 2012, 14 (23) :5888-5891
[5]   The Use of Fluoride as a Leaving Group: SN2' Displacement of a C?F Bond on 3,3-Difluoropropenes with Organolithium Reagents To Give Direct Access to Monofluoroalkenes [J].
Bergeron, Maxime ;
Johnson, Thomas ;
Paquin, Jean-Francois .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2011, 50 (47) :11112-11116
[6]   Palladium-Catalyzed Substitution and Cross-Coupling of Benzylic Fluorides [J].
Blessley, George ;
Holden, Patrick ;
Walker, Matthew ;
Brown, John M. ;
Gouverneur, Veronique .
ORGANIC LETTERS, 2012, 14 (11) :2754-2757
[7]   EFFECT OF CARBONYL + RELATED GROUPS ON REACTIVITY OF HALIDES IN SN2 REACTIONS [J].
BORDWELL, FG ;
BRANNEN, WT .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1964, 86 (21) :4645-&
[8]   Activation of Alkyl C-F Bonds by B(C6F5)3: Stoichiometric and Catalytic Transformations [J].
Caputo, Christopher B. ;
Stephan, Douglas W. .
ORGANOMETALLICS, 2012, 31 (01) :27-30
[9]   Enabling Nucleophilic Substitution Reactions of Activated Alkyl Fluorides through Hydrogen Bonding [J].
Champagne, Pier Alexandre ;
Pomarole, Julien ;
Therien, Marie-Eve ;
Benhassine, Yasmine ;
Beaulieu, Samuel ;
Legault, Claude Y. ;
Paquin, Jean-Francois .
ORGANIC LETTERS, 2013, 15 (09) :2210-2213
[10]   Net Oxidative Addition of C(sp3)-F Bonds to Iridium via Initial C-H Bond Activation [J].
Choi, Jongwook ;
Wang, David Y. ;
Kundu, Sabuj ;
Choliy, Yuriy ;
Emge, Thomas J. ;
Krogh-Jespersen, Karsten ;
Goldman, Alan S. .
SCIENCE, 2011, 332 (6037) :1545-1548