Anionic ring-opening polymerization of cyclic organosiloxanes using phosphorus ylides as strong non-ionic bases

被引:7
作者
Bessmertnykh, A
Ben, F
Baceiredo, A
Mignani, G
机构
[1] Rhodia Rech, F-69192 St Fons, France
[2] Univ Toulouse 3, UMR 5069, Lab Heterochim Fondamentale & Appl, F-31062 Toulouse 04, France
关键词
phosphorus ylides; non-ionic bases; polymerization; octamethylcyclotetrasiloxane;
D O I
10.1016/S0022-328X(03)00617-X
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Phosphonium alcoholates obtained by treatment of dimethylmethylene-[tris(dimethylamino)]phosphorane (1) with an excess of alcohol polymerize cyclic siloxanes (134) at room temperature. The thermal lability of this system permits simplifies polymer purification. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码:281 / 285
页数:5
相关论文
共 25 条
[1]  
BERTRAND G, 2000, C R ACAD SCI SER CHI, P261
[2]  
BISCHOFF R, 1998, Patent No. 0860461
[3]   Kinetic H/D/T isotope and solid state effects on the tautomerism of the conjugate porphyrin monoanion [J].
Braun, J ;
Schwesinger, R ;
Williams, PG ;
Morimoto, H ;
Wemmer, DE ;
Limbach, HH .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1996, 118 (45) :11101-11110
[4]  
CHOJNOWSKI J, 1993, SILOXANE POLYM, pCH1
[5]  
DEUBZER B, 1999, Patent No. 5994490
[6]  
FENTON GW, 1929, J CHEM SOC, P2343
[7]   TRANSIENT CATALYSTS FOR THE POLYMERIZATION OF ORGANOSILOXANES [J].
GILBERT, AR ;
KANTOR, SW .
JOURNAL OF POLYMER SCIENCE, 1959, 40 (136) :35-58
[8]   Free and supported phosphorus ylides as strong neutral Bronsted bases [J].
Goumri-Magnet, S ;
Guerret, O ;
Gornitzka, H ;
Cazaux, JB ;
Bigg, D ;
Palacios, F ;
Bertrand, G .
JOURNAL OF ORGANIC CHEMISTRY, 1999, 64 (10) :3741-3744
[9]   PHOSPHONIUM COMPOUNDS .1. ELIMINATION REACTIONS OF 2-CYANOETHYL PHOSPHONIUM SALTS - ASYMMETRIC PHOSPHINES AND ALKYLENEDIPHOSPHINES [J].
GRAYSON, M ;
KEOUGH, PT ;
JOHNSON, GA .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1959, 81 (18) :4803-4807
[10]   PHOSPHONIUM COMPOUNDS .2. DECOMPOSITION OF PHOSPHONIUM ALKOXIDES TO HYDROCARBON, ETHER AND PHOSPHINE OXIDE [J].
GRAYSON, M ;
KEOUGH, PT .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1960, 82 (15) :3919-3924