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Reactivity of Thiourea Dioxide
时间:2018-01-22 15:26:00    来源:超级管理员组       阅读:

报告题目:Reactivity of Thiourea Dioxide

报告人:Prof. Sergei V. Makarov

时间:10月25日下午15:00

地点:18号楼218室

个人简介:

Sergei V. Makarov, Ph.D.

Professor

Honorary Worker of Russian Higher Education

Member of Russian Academy of Engineering Sciences

Head of Department of Food Chemistry and Biotechnology

State University of Chemistry and Technology

153000, Ivanovo, Russia, Sheremetevsky str, 7

E-mail: makarov@isuct.ru

S. V. Makarov graduated from ISUCT in 1978 (Electrochemistry, Diploma with Honours), earned Ph.D. in 1986, and Doctor of Sciences degree in Physical Chemistry in 2000, from Ivanovo State University of Chemistry and Technology. Makarov's research interests focus on chemistry and application of sulfur-containing reductants, including sodium dithionite, rongalite and thiourea dioxide, reduction of dyes, food chemistry, as well as chemistry of vitamin B12, phthalocyanines and homogeneous catalysis. Makarov has received 5 grants from Russian Foundation for Basic Research, 3 grants from DAAD and 2 grants from Russian Ministry of Education. He has published two books, two book chapters, three reviews and more than 130 other peer-reviewed journal articles. Makarov has also delivered over 90 presentations at international and national conferences. He has translated 5 books on organic and food chemistry from English into Russian. He has been working in USA, China, Germany, Romania, Austria and many other countries. He is a member of Editorial Board of Journal of Coordination Chemistry as well as Editorial Boards of two Russian Chemical Journals.

Abstract

Sodium dithionite, sodium hydroxymethanesulfinate (rongalite)and thiourea dioxide have long been used in chemistry, chemical technology and textile industry as reductants. Recently some new fields of their application have been developed: reduction of graphene and graphite oxides, synthesis of metal sulfides and nanometer metal powders, metallization of fibres, organic synthesis including organocatalytic reactions, nonlinear phenomenain chemical kinetics. Many new relatives of these compoundshave been synthesized.

Though using dithionite, hydroxymethanesulfinate and thiourea dioxideas strong reducing agents remains the main field of their application, otherimportant trends should also be highlighted. For example, in contrast tothe redox reactions in which the sulfur-containing part of thiourea dioxideplays the governing role, it is the nitrogen part of thiourea dioxidethat determines their reactivity in the synthesis of guanidinesand its derivatives. And, of course, thiourea dioxide deserves a special attention as it can be considered as intermediate of the oxidation ofthiourea. Differentthioureas are now among the main environmentalfriendly organocatalysts.

This talk will be devoted to the main aspects of reactivity and application of thiourea dioxide.

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