一种新的阳离子引发剂,即4-乙烯基苯甲酸2-甲基硫烷基-4,5-二氢恶唑啉-4-基甲基酯三氟甲磺酸酯(1),通过1,3-恶唑烷-2的反应以定量收率合成,同时带有乙烯基和三氟甲磺酸酯基。 -硫酮衍生物与三氟甲磺酸甲酯。以1为引发剂,在二氯甲烷中进行衍生于l-丝氨酸的光学活性环状硫代氨基甲酸酯(S L)的活性阳离子开环聚合反应,得到相应的大分子单体(MS L ; M n > 10 4,M w /中号ñ<1.18),MS L的分子量可以通过[ S L ] / [ 1 ]进行控制。MS L在起始端定量地由光学活性的硫代氨基甲酸酯主链和苯乙烯基组成。进行MS L的自由基均聚和与苯乙烯的共聚以获得更高收率的相应聚合物。从所得到的聚合物MS大号显示出更高的比旋光度([α] 25 d),熔点(Ť米),和Cotton效应比MS大号,支持接枝的聚(S L)侧链的稳定二级结构。
Living cationic ring-opening polymerization by water-stable initiator: synthesis of a well-defined optically active polythiourethaneElectronic supplementary information (ESI) available: experimental details. See http://www.rsc.org/suppdata/cc/b3/b310735c/
Method of producing a polythiourethane and method of producing a graft polymer
申请人:Nagai Atsushi
公开号:US20050250926A1
公开(公告)日:2005-11-10
A polythiourethane is produced by polymerizing a compound represented by formula (I) in the presence of a compound represented by formula (II)
in which R
1
represents a methyl group;
Synthesis and Radical Polymerization of a Novel Macromonomer Obtained by Living Cationic Ring-Opening Polymerization of an Optically Active Cyclic Thiourethane by a New Initiator Carrying Styryl Group
作者:Atsushi Nagai、Bungo Ochiai、Takeshi Endo
DOI:10.1021/ma040009b
日期:2004.6.1
MSL consists of the optically active thiourethane main chain and styryl group in the initiating end quantitatively. The radical homopolymerization of MSL and the copolymerization with styrene were carried out to obtain the corresponding polymers in higher yields. The obtained polymer from MSL showed higher specific rotation ([α]25D), melting point (Tm), and Cotton effect than MSL, supporting the stabilized
一种新的阳离子引发剂,即4-乙烯基苯甲酸2-甲基硫烷基-4,5-二氢恶唑啉-4-基甲基酯三氟甲磺酸酯(1),通过1,3-恶唑烷-2的反应以定量收率合成,同时带有乙烯基和三氟甲磺酸酯基。 -硫酮衍生物与三氟甲磺酸甲酯。以1为引发剂,在二氯甲烷中进行衍生于l-丝氨酸的光学活性环状硫代氨基甲酸酯(S L)的活性阳离子开环聚合反应,得到相应的大分子单体(MS L ; M n > 10 4,M w /中号ñ<1.18),MS L的分子量可以通过[ S L ] / [ 1 ]进行控制。MS L在起始端定量地由光学活性的硫代氨基甲酸酯主链和苯乙烯基组成。进行MS L的自由基均聚和与苯乙烯的共聚以获得更高收率的相应聚合物。从所得到的聚合物MS大号显示出更高的比旋光度([α] 25 d),熔点(Ť米),和Cotton效应比MS大号,支持接枝的聚(S L)侧链的稳定二级结构。
Living cationic ring-opening polymerization by water-stable initiator: synthesis of a well-defined optically active polythiourethaneElectronic supplementary information (ESI) available: experimental details. See http://www.rsc.org/suppdata/cc/b3/b310735c/
作者:Atsushi Nagai、Bungo Ochiai、Takeshi Endo
DOI:10.1039/b310735c
日期:——
Living cationic ring-opening polymerization under air and water was achieved using a well-defined water-resistant cationic initiator in dichloromethane without purification at ambient temperature.