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  • 08월 28일 16시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

One-Pot Synthesis of Porphyrins by Microwave Reaction

2008년 8월 11일 17시 20분 30초
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금 <발표Ⅲ>
저자 및
정은영, Jiang Nanzhe1, 박상언
인하대학교 화학과, Korea
1인하대학교 화학과, China

The Porphyrins have been well known as guest ligand that can accommodate and stabilize various high oxidation state transition metal cations. And it also have several advantages when applied to ligands such as: (1) selective oxidation of organic substrates with several oxidizing agents; (2) Operating at mild temperatures; and (3) host for a wide range of transition metals. The classical methods was the refluxing of 4-carboxy benzaldehyde and pyrrole with of acid catalyst. In many cases, toxic oxidizing compounds are used to convert the porphyrinogen to porphyrin . And some difficulty of poor product yield, and intractable purification problem. So, we were synthesis of tetra-(4-carboxyphenyl) porphyrin (TCPP) by microwave reaction within 30minute. Synthesis of TCPP complex are shown in Fig. 1. TCPP properties were studied by various techniques such as IR-Spectroscopy , UV-Vis- spectroscopy and Maldi-TOF and Oxidation of catalytic reaction. The absoption spectrum of tetra-(4-carboxyphenyl) porphyrin (TCPP) shows a strong absorbance at 417nm along with weaker Q-band absorbances at 510, 550, 590, and 645 nm. The UV-vis spectra of TCPP complex are shown in Fig. 2. The catalytic activity of the obtained TCPP and Metal-TCPP (M=Cu, Zn ) was investigated for oxidation of trans-stilbene and styrene with hydrogen peroxide as the oxidants.