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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%.

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%.

Introduction to General, Organic and Biochemistry
Introduction to General, Organic and Biochemistry
11th Edition
ISBN:9781285869759
Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Chapter19: Carboxylic Anhydrides, Esters, And Amides
Section: Chapter Questions
Problem 19.17P: 7 What type of structural feature do the anhydrides of phosphoric acid have in common with...
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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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