Catalysis Communications p. 101 - 105 (2014)
Update date:2022-08-05
Topics:
Chen, Qian
Zhang, Changyuan
Wen, Chunxiao
Fang, Jin
Du, Zhiyun
Wu, Dongling
PtCl2 was found to efficiently catalyze intermolecular additions of propiolate esters with alcohols. The reaction of propiolate esters and alcohols in the presence of PtCl2 gave (E)-vinyl ethers as the major products at 60 °C, whereas alkyl 3,3-dialkoxypropanoates were predominantly obtained when the reaction temperature was set to 80°C. On the other hand, a novel regioselective tetramerization of propiolate esters catalyzed by AuCl3 under mild conditions afforded 1,2,5,6-tetrasubstituted- cyclooctatetraene (1,2,5,6-COT) in moderate yields.
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