第37届国际化学奥林匹克竞赛预备试题(英文).doc

Code：Name：37th IChO Theoretical Examination Answer SheetsProblem 1：Chemistry of Amides and Phenols1-11-21-31-41-51-61-71-8ΣTotal Points4444648 438ReceivedProblem 2：Organic Synthesis and Stereochemistry2-12-22-32-42-52-62-72-8ΣTotal Points4866686 448ReceivedProblem 3：Organic Photochemistry and Photophysics3-13-23-33-43-53-63-73-8ΣTotal Points8444444436ReceivedProblem 4：Gold Capital of Asia4A-14A-24A-34A-44A-54A-64B-14B-24B-34B-44B-5ΣTotal Points2442622 22 8 842ReceivedProblem 5：Lewis Structure5-15-25-35-45-5ΣTotal Points2446521ReceivedProblem 6：Alkalinity of Water and Solubility of CO26-16-26-36-46-56-66-76-8ΣTotal Points4466466440ReceivedProblem 7：Kinetic Behavior Behavior of Ozone 7-17-27-37-47-5 ΣTotal Points6664628 ReceivedProblem 8：Protein Folding8-18-28-38-48-58-68-7ΣTotal Points226442626 ReceivedProblem 1：Chemistry of Amides and Phenols1-11-21-31-41-51-61-71-8ΣTotal Points4444648438 Received1-1Express your answer from high to low melting point as follows： ＞ ＞ (Insert compound codes A, B, C) 1-2 Answer for multiple choice question：1-3 Draw the structural formula of tripeptide Gly-Gly-Gly1-4The number of all possible linear tripeptides is： 1-5The number of optically active linear tripeptides is： 1-6 Express your answer from high to low binding affinity as follows： ＞ ＞ (Insert compound codes D, E, and F) 1-7 Draw the structural formula of compound H：1-8 Answer for multiple choice question：Problem 2：Organic Synthesis and Stereochemistry2-12-22-32-42-52-62-72-8ΣTotal Points4866686448 Received2-1 Draw the structural formula of compound A.2-2 T or F (a) OsO4 is an oxidizing agent in the reaction of A to B. (b) MeOH is generated as a by-product in the reaction of B to C. (c) Protons act as the catalyst in the transformation of B to C. (d) C will still be formed albeit in lower yields in the absence of Me2C(OMe)22-3 D/E ratio before recrystallization： Show your work hereCode：Name：2-4T or F (a) The reaction was to oxidize compound F. (b) The oxygen atom inserted originated from MCPBA. (c) The R/S notation of C-1 remained unchanged before and after the reaction.2-5 Draw the configurational formula of compound H.2-5 Give your answers as followsC-1： ； C-2： ；C-3： ；C-4： .2-7 2-8 The number of diastereoisomers of pentasaccharide is：Problem 3：Organic Photochemistry and Photophysics3-13-23-33-43-53-63-73-8ΣTotal Points8444444436Received3-1 Draw the structural formula of C and D3-2 Answer for multiple choice question：3-3 Answer for multiple choice question：3-4 Answer for multiple choice question：3-5 Draw the structural formula of compound H3-6 (cis or trans)3-7 (Answer for multiple choice question )3-8 (Answer for multiple choice question )Problem 4：Gold Capital of Asia4A-14A-24A-34A-44A-54A-64B-14B-24B-34B-44B-5ΣTotal Points2442622228842Received4A-1 Draw a structure for Au(CN)2-4A-2 Weight for KCN： gShow your work here 4A-3 Code：Name：4A-4 oxidizing agent： reducing agent：4A-5 Formation constant K：Show your calculations here4A-6 Answer for multiple choice question：4B-1 Answer for multiple choice question：4B-2 Answer for multiple choice question：4B-3 Answer for multiple choice question：4B-4 Answer for multiple choice question： Show your work here4B-5 Answer for multiple choice question： Show your work hereProblem 5：Lewis Structure5-15-25-35-45-5ΣTotal Points2446521 Received5-15-25-35-4 Answer for multiple choice question 5-4a： Answer for multiple choice question 5-4b： Answer for multiple choice question 5-4c：5-5Problem 6：Alkalinity of Water and Solubility of CO26-16-26-36-46-56-66-76-8ΣTotal Points446646。