Simultaneous construction of polymer backbone and side chains by three‐component polycondensation. Synthesis of polyethers with propargyl side chains from dialdehydes, alkylene bis(trimethylsilyl) ethers, and allenyltrimethylsilane
Simultaneous construction of polymer backbone and side chains by three‐component polycondensation. Synthesis of polyethers with propargyl side chains from dialdehydes, alkylene bis(trimethylsilyl) ethers, and allenyltrimethylsilane
复制标题
通过三组分缩聚同时构建聚合物主链和侧链，由二醛、亚烷基双（三甲基甲硅烷基）醚和丙二烯基三甲基硅烷合成具有炔丙基侧链的聚醚。
DOI：
10.1002/pola.21003
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
T. Yokozawa
中科院分区：
文献类型：
--
作者：
Lui Niimi;S. Hiraoka;T. Yokozawa
以二醛1、亚烷基双（三甲基硅基）醚2和1-三甲基硅基-2-丁炔（4 b）为原料，通过酸催化反应合成了含丙二烯基侧链的聚醚。聚合前，刘易斯酸催化的醛，烷氧基硅烷，和炔丙基硅烷的三组分反应进行了研究，发现4 b是有效的联烯基试剂在这个反应。1、2和4 b的缩聚在10摩尔%的三苯甲基高氯酸盐（TrClO 4）存在下在−50 °C下进行，以良好的产率产生由摩尔比为1：1：2的1、2和4 b组成的所需聚醚。将该聚醚用阳离子催化剂如BF 3 OEt 2处理以得到交联聚合物。这种聚合物合成是不寻常的，因为它同时从三个起始化合物构建聚合物主链和官能侧链。
Polyethers with the allenyl side chains were synthesized by the simultaneous acid-catalyzed reaction of dialdehydes 1, alkylene bis(trimethylsilyl) ethers 2, and 1-trimethylsilyl-2-butyne (4b). Before polymerization, Lewis acid-catalyzed three-component reactions of aldehydes, alkoxysilanes, and propargylsilanes were studied to find that 4b was effective as an allenyl reagent in this reaction. The polycondensations of 1, 2, and 4b were carried out in the presence of 10 mol % of triphenylmethyl perchlorate (TrClO4) at −50 °C to yield the desired polyethers consisting of 1, 2, and 4b with a molar ratio of 1:1:2 in good yields. This polyether was treated with a cationic catalyst such as BF3OEt2 to give a cross-linked polymer. This polymer synthesis is unusual in that it concurrently constructs both the polymer backbone and the functional side chains from three starting compounds.
影响因子：
5.1
作者：
T. Yokozawa;K. Takenoya
通讯作者：
T. Yokozawa;K. Takenoya
Tsutomu Yokozawa：“通过三组分缩聚同时构建聚醚主链和各种酮侧链：使用各种硅烷基烯醇醚的改进方法”J. 38・1。179-188 (20
DOI：
--
发表时间：
--
期刊：
影响因子：
--
作者：
通讯作者：
--