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PROTECTING GROUPS 57 Smith: Chapter 7

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- Protect functional groups which may be incompatible with a set of reaction conditions - 2 step process- must be efficient - Selectivity a. selective protection b. selective deprotection Hydroxyl Protecting Groups Ethers Methyl ethers R-OH → R-OMe difficult to remove except for on phenols Formation: - CH2N2, silica or HBF4 - NaH, MeI, THF

  Protection, Group, Functional, Protecting, Deprotection, Protecting groups, Protecting groups 57

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