The organocatalytic asymmetric Prins cyclization.
The organocatalytic asymmetric Prins cyclization.
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DOI:
10.1002/anie.201500219
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发表时间:
2015-06
影响因子:
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通讯作者:
G. Tsui;Luping Liu;B. List
中科院分区:
文献类型:
--
作者:
G. Tsui;Luping Liu;B. List
We describe here the design and development of an organocatalytic Prins cyclization. In the presence of a confined chiral imidodiphosphoric acid catalyst, salicylaldehydes react with 3-methyl-3-buten-1-ol to afford highly functionalized 4-methylenetetrahydropyrans in excellent regio- and enantioselectivity. The extreme steric demand of the acid catalyst is key for the success of this transformation.