Pho OBn HO HO OH HO a, b ACO OAC AcO HOA OPMP ACO- -OPMP OH 5 OAC 2 Scheme 1: Reagents: (a) acetic anhydride, sulfamic acid, 60 °C, 30 min, 91%; (b) Et3SiH, 12, 0-5 °C, 30 min, 82%.

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Chapter1: Chemical Foundations
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Scheme 1: Reagents: (a) acetic anhydride, sulfamic acid, 60°C,30min,91%; (b) Et3SiH,I2,0-5°C,30min,82%. 1) Draw the FULL, ARROW-PUSHING MECHANISM 2) Provide a verbalization of the mechanism for your reaction mechanism 3) What is happening at each step? What atom is nucleophilic? Which atom is electrophilic? Which bonds are made? Which bonds are broken? 4) Imagine you are trying to describe the reaction mechanism and I can't see your display - how would you describe the mechanism in a way that I know, that you know, what you are talking about. 

Pho
OBn
HO
HO
OH
HO
a, b
ACO
OAC
AcO
HOA
OPMP
ACO-
-OPMP
OH
5
OAC
2
Scheme 1: Reagents: (a) acetic anhydride, sulfamic acid, 60 °C, 30 min, 91%; (b) Et3SiH, 12, 0-5 °C, 30 min, 82%.
Transcribed Image Text:Pho OBn HO HO OH HO a, b ACO OAC AcO HOA OPMP ACO- -OPMP OH 5 OAC 2 Scheme 1: Reagents: (a) acetic anhydride, sulfamic acid, 60 °C, 30 min, 91%; (b) Et3SiH, 12, 0-5 °C, 30 min, 82%.
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