Discotic liquid crystals of transition metal complexes, 54: Rapid microwave-assisted synthesis and homeotropic alignment of phthalocyanine-based liquid crystals
Discotic liquid crystals of transition metal complexes, 54: Rapid microwave-assisted synthesis and homeotropic alignment of phthalocyanine-based liquid crystals
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DOI：
10.1142/s108842461750047x
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发表时间：
2017-09
影响因子：
1.5
通讯作者：
Toshiyuki Akabane;K. Ohta;T. Takizawa;T. Matsuse;M. Kimura
中科院分区：
文献类型：
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作者：
Toshiyuki Akabane;K. Ohta;T. Takizawa;T. Matsuse;M. Kimura
酞菁类液晶合成的最大难题是反应时间长。为了缩短反应时间，我们开发了新的方法A、B和D，用于通过使用微波加热和/或添加Aliquat 336的相转移催化剂来合成酞菁基液晶。采用微波加热法，采用方法A和B，在30-60 min内成功地合成了一系列酞菁衍生物CnPcZn（1）（n= 10，12，14，16和18：a，B，c和e）。另一方面，另一系列的衍生物Cn（OH）PcZn（2a-2 e）不能通过微波加热合成。因此，所有这些衍生物都是使用常规方法C通过油浴加热合成的，但反应需要很长时间（22.5-88小时）。为了缩短反应时间，我们开发了通过添加Aliquat 336相转移催化剂的油浴加热的方法D。在此方法中，我们成功地缩短了反应时间从…
The most difficult problem on syntheses of the phthalocyanine-based liquid crystals is the long reaction time. In order to shorten the reaction time, we have developed novel Methods A, B and D, for the syntheses of phthalocyanine-based liquid crystals by using microwave heating and/or adding a phase transfer catalysis of Aliquat 336. A series of phthalocyanine derivatives CnPcZn(1) (n= 10, 12, 14, 16 and 18: a, b, c and e) could be successfully synthesized in a dramatically short reaction time of 30–60 min using Methods A and B by microwave heating. On the other hand, anothor series of the derivatives Cn(OH)PcZn (2a–2e) could not be synthesized by microwave heating. Therefore, all these derivatives were synthesized using conventional Method C by oil bath heating, but the reaction took a very long time (22.5–88 h). To shorten the reaction time, we have developed Method D by oil bath heating with adding a phase transfer catalyst of Aliquat 336. In this method, we successfully shortened the reaction time fro...