demostrate the necesary reactives in the right order for the synthesis OH OH HO
complete all the synthesis problems.
OH Br OH OH HO OH
OH Br OH OH HO OH
Question 15 H2OH HO HO Which of the sugars at right is an L-sugar? OH H2OH HO HO CH2OH HO OH OH OH CH2OH o HO OH HO HO OH
formulate a 4 step synthesis. reagents listed
OH 4-STEP SYNTHESIS HO 2 NaNH, NaH
Provide reagents to complete this multi step synthesis OH CI ? HO 12pt Paragraph ***
Arrange the compounds in order of increasing boiling point (lowest first). OH HO. grigen HO. HO.
HO OH ОН Ethylene oxide is the starting material for the synthesis of 1,4-dioxepane. Draw curved arrows to show the movement of electrons in this step of the reaction mechanism. Arrow-pushing Instructions :o: Hö: H-OH :0:
OCH3 OH from One route to the synthesis of HO and CH,CH2MgBr is to 1) protect the ketone as an acetal, 2) reduce the ester to an alcohol, 3) hydrolyze the acetal back to the ketone, 4) protect the alcohol as a TMS ether, 5) react the ketone with the Grignard reagent followed by acidic workup to give the desired product. A second route to the desired product would start with the selective reduction of only the ketone to an...
Which of the following sugars are ketohexoses? OH CH2OH OH HO CH2OH CH2OH OH OH OH CH20H OH OH OH HO HO OH 0 0 OH OH CH OH OH OH OH CH20H
Which of the following sugars are ketohexoses? OH CH2OH OH HO CH2OH CH2OH OH OH OH CH20H OH OH OH HO HO OH 0 0 OH OH CH OH OH OH OH CH20H
-UN cho HO HO OH Онст CH2OH он бн HO Loan Is -OH Br enant Same CH,OH (13) Rank the hydrogen atoms indicated with a letter in order of increasing ease of removal to form a carbocation (1 = easiest to remove, 3 = hardes to remove). Explain your ranking. (3 pts) I because there is Resonance нсъсн 2 becau& there is only one t to remove H-CH2-0-CH-CH3 I before doing Raphaule HH 3 because there are two Carber that...
13. Select the key step for the mechanism of decarboxylation: 0 HO OH Оме HO H2SO4 OME Me product O'HO A В. D 14. Which reagent(s) is(are) needed to complete the desired synthesis?: 0 ? A. NaOme MeO H dil. HCI B. NaOH, CHO} heat C, LDA, (MO) CO / MCPBA D. CO, heat