期刊
ORGANIC LETTERS
卷 6, 期 21, 页码 3877-3880出版社
AMER CHEMICAL SOC
DOI: 10.1021/ol0483495
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资金
- NCI NIH HHS [CA 59703] Funding Source: Medline
Alkynyldiols 1 undergo cyclolsomerization to the corresponding seven-membered cyclic enol ethers 2 under tungsten carbonyl catalysis. This novel transformation proceeds with good yields and virtually complete regloselectivity for all diastereomers of 1, favoring the product 2 resulting from endo-mode cyclization. The unexpected regioselectivity may be dependent on the presence of the dioxolane structure tethering the terminal alkyne and diol functional groups.
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