期刊
TETRAHEDRON LETTERS
卷 64, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2020.151804
关键词
Cyclobutanedione; Potassium ethoxide; Ring expansion; Cyclic beta-keto ester
资金
- JSPS KAKENHI [JP19K05473]
- Kanazawa University SAKIGAKE project
1,3-Cyclobutanediones reacted with aromatic aldehydes to produce cyclic beta-keto esters, catalyzed by a small amount of potassium ethoxide. The effects of alkoxide catalysts and spiro cyclic groups on the 1,3-cyclobutanediones were examined.
1,3-Cyclobutanediones (dialkyl ketene dimer) reacted with various aromatic aldehydes to give six-membered cyclic beta-keto esters by using a catalytic amount of potassium ethoxide. Effects of alkoxide catalysts and spiro cyclic groups at the 2,4-positions of 1,3-cyclobutanediones were investigated. (C) 2020 Published by Elsevier Ltd.
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