What Is the Role of Titanium Chloride in the Mukaiyama

question 61

Multiple Choice

What is the role of titanium chloride in the Mukaiyama reaction shown below?

• A)Titanium activates the aldehyde electrophile,and a chloride ion removes the sialyl-containing TMS group.
• B)Titanium activates the alkene electrophile,and a chloride ion removes the sialyl-containing TMS group.
• C)Titanium activates the aldehyde electrophile,and a chloride ion forms an ion pair with the carbocation intermediate.
• D)Titanium removes the sialyl-containing TMS group,and the chloride ion activates the aldehyde nucleophile.

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