Tetrabutylammonium nitrite - acetic anhydride system, tetrabutylammonium nitrite, tetrabutylammonium acetate, and cesium acetate - 18-crown-6 for efficient unmasking of alkyl N-phenylcarbamates

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• 作者：Akai ; Shoji ; Nishino ; Noriaki ; Iwata ; Yukihiro ; Hiyama ; Jun-ichi ; Kawashima ; Etsuko ; Sato ; Ken-ichi ; et. al.
• 关键词：Carbohydrates ; Carbamates ; Protecting groups ; Cleavage reactions
• 刊名：Tetrahedron Letters
• 出版年：1998
• 出版时间：July 30, 1998
• 年：1998
• 卷：39
• 期：31
• 页码：5583-5586
• 全文大小：189 K

文摘

Novel unmasking procedures for alkyl N-phenylcarbamates are established by the use of a tetrabutylammonium nitrite (Bu₄NNO₂) - acetic anhydride system, Bu₄NNO₂, Bu₄NOAc, and CsOAc - 18-crown-6 towards variously functionalized sugar derivatives.