Đề thi chuẩn bị icho 2020
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Đề thi chuẩn bị icho 2020
PREPARATORY PROBLEMSPreparatory Problems52nd IChO 2020International Chemistry OlympiadIstanbul, TurkeyCHEMISTRY FOR A BETTER TOMORROWFifth edition (04 Đề thi chuẩn bị icho 2020 4.08.2020)TŨBĨTAK52nd International Chemistry Olympiad, Istanbul, TURKEYPrefaceWc are very glad to provide Preparatory Problems lor (he 52ud International Chemistry Olympiad, which will be held in 2020 in Istanbul. Turkey. We prepared these problems with the intention of facilitating the training an Đề thi chuẩn bị icho 2020 d preparation of participants, rhe contents of the problems have been carefully selected so as to cover a broad range of challenging topics that can bĐề thi chuẩn bị icho 2020
e encountered in modern as well as classical chemistry. The problems can be solved by applying the fundamental principles of chemistry covered al highPREPARATORY PROBLEMSPreparatory Problems52nd IChO 2020International Chemistry OlympiadIstanbul, TurkeyCHEMISTRY FOR A BETTER TOMORROWFifth edition (04 Đề thi chuẩn bị icho 2020 hese advanced topics arc listed explicitly under “Topics of Advanced Difficulty” and their applications are demonstrated in the tasks. We expect the participants to be familiar with these advanced topics.rhe problems listed in this booklet consist of 25 theoretical and 8 practical tasks. The solutio Đề thi chuẩn bị icho 2020 ns were sent to the Head Mentor of each country by e-mail by February 10Ul. 2020 and published by June 01**, 2020 on our IChO 2020 website. We welcomeĐề thi chuẩn bị icho 2020
any comments, suggestions, corrections, or questions about the problems at icho2020@tubitak.gov.tr.The International Chemistry Olympiad presents a grPREPARATORY PROBLEMSPreparatory Problems52nd IChO 2020International Chemistry OlympiadIstanbul, TurkeyCHEMISTRY FOR A BETTER TOMORROWFifth edition (04 Đề thi chuẩn bị icho 2020 ience, and in particular chemistry. We hope you will enjoy solving these problems and we look forward to seeing you in July in Istanbul. Turkey.Acknowledgments1 would like to express my deep gratitude to all the authors for their dedication and effort in contributing to the Preparatory Problems as w Đề thi chuẩn bị icho 2020 ell as the members of the International Steering Committee for their valuable comments and suggestions. We arc also highly appreciative of the ScientiĐề thi chuẩn bị icho 2020
fic and Technological Research Council of Turkey (TUBITAK), in collaboration with the Faculty of Science. Istanbul Technical University (ITU), for facPREPARATORY PROBLEMSPreparatory Problems52nd IChO 2020International Chemistry OlympiadIstanbul, TurkeyCHEMISTRY FOR A BETTER TOMORROWFifth edition (04 Đề thi chuẩn bị icho 2020 piad, Istanbul, TURKEYTable of ContentsAuthors.............................................................................4Physical Constants and Equations....................................................5Periodic Table of Elements..........................................................7'H NMR Đề thi chuẩn bị icho 2020 Chemical Shifts..............................................................8Typical Coupling Constants.............................................Đề thi chuẩn bị icho 2020
.............8Bc NMR Chemical Shifts..............................................................9IR Absorption Frequency Table......................PREPARATORY PROBLEMSPreparatory Problems52nd IChO 2020International Chemistry OlympiadIstanbul, TurkeyCHEMISTRY FOR A BETTER TOMORROWFifth edition (04 Đề thi chuẩn bị icho 2020 ....................................................13Problem 1. Salvia Species Growing in Turkey: Isolation and Total Synthesis of AbieteneDiterpenoids.......................................................................14Problem 2. Istanbulins and Related Sesquiterpene Natural Products.......... Đề thi chuẩn bị icho 2020 ........19Problem 3. Cay, Cha. Chai. Te, Tea. Tee. The. Thee, and Earl Grey Tea Flavor: Bergamot.. 23Problem 4. Early Russian Organic Chemists and MarĐề thi chuẩn bị icho 2020
kovnikov’s Rule...................25Problem 5. Amdt-Eistert Homologation...............................................29PREPARATORY PROBLEMSPreparatory Problems52nd IChO 2020International Chemistry OlympiadIstanbul, TurkeyCHEMISTRY FOR A BETTER TOMORROWFifth edition (04PREPARATORY PROBLEMSPreparatory Problems52nd IChO 2020International Chemistry OlympiadIstanbul, TurkeyCHEMISTRY FOR A BETTER TOMORROWFifth edition (04Gọi ngay
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