Efficient acylation and transesterification catalyzed by dilithium tetra-tert-butylzincate at low temperatures
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- 作者：Miyuki Oshimura ; Yuki Oda ; Keita Kondoh ; Tomohiro Hirano ; Koichi Ute
- 关键词：Acylation ; Transesterification ; Zinc catalyst ; Chemoselectivity
- 刊名：Tetrahedron Letters
- 出版年：2016
- 出版时间：11 May 2016
- 年：2016
- 卷：57
- 期：19
- 页码：2070-2073
- 全文大小：1669 K
文摘
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The acylation and transesterification of alcohols catalyzed by TBZL were investigated.
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The acylation and transesterification proceeded at 0 to −40 °C.
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The transesterification occurred for a wide range of combinations of esters and alcohols.
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The reaction proceeded quantitatively by addition of molecular sieves 4A.
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The transesterification proceeded even in the presence of H2O and amines.