Summary
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1.
We have obtained for the first time ethers and esters of 2-bromo-3-hydroxyacrolein.
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2.
Orthoformic ester condenses with dioxene and the condensation product is easily converted to 2-formyl-p-dioxene.
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3.
The acylal obtained from 1,1,2-trimethoxyethane gives on pyrolysis 1,2-dimethoxyethylene.
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