D. Alonso, C. Nájera, M. Varea
May 20, 2003
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ChemInform
Abstract
Synthesis 2003, No. 2, Print: 31 01 03. Art Id.1437-210X,E;2003,0,02,0277,0287,ftx,en;P06002SS.pdf. © Georg Thieme Verlag Stuttgart · New York ISSN 0039-7881 Abstract: Several π-deficient 2-(arylsulfonyl)ethyl groups have been studied as carboxylic acid protecting groups. The 2-[3,5bis(trifluoromethyl)phenylsulfonyl]ethyl group is the most easily removed protecting group for acids under mild basic conditions using aqueous NaHCO3.