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Author Question: Elaboration of an advanced intermediate toward the synthesis of the pulmoside aglycon is shown ... (Read 42 times)

ncasson210

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Question 1

A report on the synthesis of Aromatic Erythrina Alkaloids uses the given transformation (Org. Lett. 2006, 8, 2143). What are reaction conditions?



◦ Mg/EtO
◦ CHCl3, t-BuOK
◦ 9-BBN
◦ CH2I2 / Zn-Cu
◦ CH2I2

Question 2

Elaboration of an advanced intermediate toward the synthesis of the pulmoside aglycon is shown below. What are the structures of intermediates A-C? (J. Am. Chem. Soc. 2013, 135, 2501.)







◦ I is A, IV is B, and III is C
◦ II is A, I is B, and III ic C
◦ I is A, II is B, and III is C
◦ III is A, II is B, and I is C
◦ I is A, II is C, and III is B


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Marked as best answer by ncasson210 on Feb 17, 2022

Rcfelber

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Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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ncasson210

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Reply 2 on: Feb 17, 2022
Excellent


miss_1456@hotmail.com

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Reply 3 on: Yesterday
Great answer, keep it coming :)

 

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