Preparation of β-Keto Ester Acetals by Reaction of Ortho Esters With Ketene Silyl Acetals in the Presence of Titanium Tetrachloride
- 1 January 1990
- journal article
- Published by CSIRO Publishing in Australian Journal of Chemistry
- Vol. 43 (3) , 617-622
- https://doi.org/10.1071/ch9900617
Abstract
Reaction of 2-ethoxy-2-methyl-1,3-dioxolan (1c) with 1-methoxy-1-trimethylsilyloxyethene (4a) in dichloromethane in the presence of titanium tetrachloride gave 62% of methyl 2-(2′-methyl-1′,3′-dioxolan-2′-yl)acetate (5a). Similarly, reaction of (1c) with l-methoxy-1-trimethylsilyloxyprop-1-ene (4b) afforded 73% of methyl 2-(2′-methyl-1′,3′-dioxolan-2′-yl) propanoate (5b).Keywords
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