Synthesis 2014; 46(21): 2917-2926
DOI: 10.1055/s-0034-1378498
paper
© Georg Thieme Verlag Stuttgart · New York

Copper(I) Iodide Mediated Synthesis of Carbohydrate-Based Terminal Allenes by ATA Reaction

Xin Huang
Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, 310027 Hangzhou, Zhejiang, P. R. of China   Fax: +86(21)62609305   eMail: masm@sioc.ac.cn
,
Chunling Fu
Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, 310027 Hangzhou, Zhejiang, P. R. of China   Fax: +86(21)62609305   eMail: masm@sioc.ac.cn
,
Shengming Ma*
Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, 310027 Hangzhou, Zhejiang, P. R. of China   Fax: +86(21)62609305   eMail: masm@sioc.ac.cn
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Publikationsverlauf

Received: 27. Mai 2014

Accepted after revision: 20. Juni 2014

Publikationsdatum:
17. Juli 2014 (online)


Abstract

We have demonstrated two improved methods for the synthesis of carbohydrate-based terminal allenes from propargyl or homopropargyl glycosides. The reaction of propargyl or homopropargyl glycosides with paraformaldehyde (2.5 equiv) in the presence of copper(I) iodide (10 mol%) and diisopropylamine (1.8 equiv) or copper(I) iodide (50 mol%) and dicyclohexylamine (1.8 equiv) produces sugar-linked terminal allenes in 50–79% yield.

Supporting Information