Pinacol-Type Rearrangements of Intramolecular Photocycloadducts: Application of the 2,2-Dimethyl-4-Pentenoate Protecting Group

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• 作者：Crimmins ; Michael T. ; Carroll ; Charlotte A. ; Wells ; Angela J.
• 关键词：protecting groups ; esters ; lactones
• 刊名：Tetrahedron Letters
• 出版年：1998
• 出版时间：September 24, 1998
• 年：1998
• 卷：39
• 期：39
• 页码：7005-7008
• 全文大小：189 K

文摘

A pinacol-type rearrangement of intramolecular photocycloadducts has been accomplished by exploiting a novel ester protecting group that can be easilyremoved from a hindered alcohol. The ester is removed by an intramolecular lactonization, overcoming the steric factors normally associated with pivalate esters.