SYNTHESIS OF SILYL, GERMYL, AND PHOSPHINO-SUBSTITUTED ACYLKETENES FROM PIVALOYLETHOXYACETYLENEстатья
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Web of Science
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Дата последнего поиска статьи во внешних источниках: 27 мая 2015 г.
Аннотация:The reaction of pivaloylethoxyacetylene with silicon halides, which has been found to occur as a 1,4-addition, leads to allenic ethers, which readily eliminate ethyl halides and are converted to previously unknown types of ketenes-stable element-substituted acylketenes. Germanium-substituted acylketenes are also formed; however, clear evidence of 1,4-addition of germanium halides was not obtained. In the reaction between Ph2PCl and pivaloylethoxyacetylene, phosphorus (III) substituted acylketenes initially formed underwent rapid [3 + 3] cyclodimerization.