Evidence for radical fragmentations from persistent singlet carbenes

被引:19
作者
Cattoën, X
Miqueu, K
Gornitzka, H
Bourissou, D
Bertrand, G
机构
[1] Univ Toulouse 3, Lab Heterochim Fondamentale & Appl, UMR 5069, F-31062 Toulouse, France
[2] Univ Calif Riverside, Dept Chem, UCR CNRS Joint Res Chem Lab, UMR 2282, Riverside, CA 92521 USA
[3] Univ Pau & Pays Adour, UMR 5624, Lab Chim Theor & Physicochim Mol, F-64013 Pau, France
关键词
D O I
10.1021/ja050028g
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Upon warm up, persistent aminohydrazinocarbenes undergo β-fragmentation reactions. Experimental as well as computational evidences are reported for the involvement of radical processes. This is the first example of a homolytic fragmentation for a persistent singlet carbene. Copyright © 2005 American Chemical Society.
引用
收藏
页码:3292 / 3293
页数:2
相关论文
共 42 条
[1]   1,3-bis(N,N-dialkylamino)imidazolin-2-ylidenes:: Synthesis and reactivity of a new family of stable N-heterocyclic carbenes [J].
Alcarazo, M ;
Roseblade, SJ ;
Alonso, E ;
Fernández, R ;
Alvarez, E ;
Lahoz, FJ ;
Lassaletta, JM .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (41) :13242-13243
[2]   When and how do diaminocarbenes dimerize? [J].
Alder, RW ;
Blake, ME ;
Chaker, L ;
Harvey, JN ;
Paolini, F ;
Schütz, J .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2004, 43 (44) :5896-5911
[3]   Bis(diisopropylamino)carbene [J].
Alder, RW ;
Allen, PR ;
Murray, M ;
Orpen, AG .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1996, 35 (10) :1121-1123
[4]   Looking for stable carbenes: The difficulty in starting anew [J].
Arduengo, AJ .
ACCOUNTS OF CHEMICAL RESEARCH, 1999, 32 (11) :913-921
[5]   Stable carbenes [J].
Bourissou, D ;
Guerret, O ;
Gabbaï, FP ;
Bertrand, G .
CHEMICAL REVIEWS, 2000, 100 (01) :39-91
[6]   The chemistry of phosphinocarbenes [J].
Bourissou, D ;
Bertrand, G .
ADVANCES IN ORGANOMETALLIC CHEMISTRY, VOL 44, 1999, 44 :175-219
[7]   TRIALKYLSILYLAMINYL RADICALS .1. ELECTRON-SPIN RESONANCE STUDIES OF THE PHOTOLYSIS OF SILYLATED HYDRAZINES, HYDROXYLAMINES, TRIAZENES, AND TETRAZENES [J].
BRAND, JC ;
ROBERTS, BP ;
WINTER, JN .
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2, 1983, (03) :261-270
[8]   Transient azomethine-ylides from a stable amino-carbene and an aldiminium salt [J].
Cattoën, X ;
Solé, S ;
Pradel, C ;
Gornitzka, H ;
Miqueu, K ;
Bourissou, D ;
Bertrand, G .
JOURNAL OF ORGANIC CHEMISTRY, 2003, 68 (03) :911-914
[9]   Chiral N-heterocyclic carbenes as stereodirecting ligands in asymmetric catalysis [J].
César, V ;
Bellemin-Laponnaz, S ;
Gade, LH .
CHEMICAL SOCIETY REVIEWS, 2004, 33 (09) :619-636
[10]   Stability and reactivity of N-heterocyclic carbene complexes [J].
Crudden, CM ;
Allen, DP .
COORDINATION CHEMISTRY REVIEWS, 2004, 248 (21-24) :2247-2273