10.1002/adsc.201801423
Advanced Synthesis & Catalysis
Phenylacetylene (0.91 g, 7.0 mmol) was added to the
Carrino, A. I. Caplan, L. Breton, Eur. J. Dermatol.
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reaction flask and then nitrogen protection, after that, added
in re-steamed THF (6 mL) to stir for 5 minutes. n-BuLi
(2.4 mol/L, 2.9 mL, 7mmol) was injected at a low
temperature (-78℃), after the mixture was stirred for 5 min
under the dewar, added the 1-butyraldehyde (0.435 g) and
stirred at room temperature until the starting material was
completely consumed. The mixture was concentrated in
vacuo. Purification of the residue by flash chromatography
on silica gel (petroleum ether / ethyl acetate = 100:1, V/V)
and afforded the propargylic carboxylate (1a) as colorless
oil.
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acetate (3a)
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A solution of diacetyl-D-xylal (2a, 0.2 mmol) and 1-
phenylhex-1-yn-3-yl acetate (1a, 0.2 mmol) in anhydrous
CH3NO2 (2.0 mL) was stirred at room temperature for 10
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xylopyranoside (3a).
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Acknowledgements
We gratefully acknowledge financial support of this work by
the National Natural Science Foundation of China (21602123,
21272136) and Youth Talent Development Foundation of China
Three Gorges University. Special thanks to Dr. Xuewei Liu of
Nanyang Technological University for his guidance in organic
chemistry and biochemistry.
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