Citation: Qun LIU, Bao Zhong ZHAO. SYNTHESIS OF 1, 1-DIALKYLTHIO-1, 3, 5-HEXATRIENES WITH α-OXOKETENE DITHIOACETALS[J]. Chinese Chemical Letters, ;1992, 3(4): 241-244. shu

SYNTHESIS OF 1, 1-DIALKYLTHIO-1, 3, 5-HEXATRIENES WITH α-OXOKETENE DITHIOACETALS

Qun LIU ^a ,
Bao Zhong ZHAO ^b

a Department of Chemistry Northeast Normal University Changchun 130024;
b Department of Environmental Science Northeast Normal University Changchun 130024

Received Date: 7 November 1991

α-Oxoketene dithioacetals 2 via, 1,2-nucleophilic addition by allyl magnesium bromide afforded corresponding alcohols (3).Treated with water and catalyzed by Lewis acid, the alcohols 3 were converted regiospecifically to the conjugated 1,1-dialkylthio-1,3,5 hexatrienes (4). Both the alcohol 8 and its methoxy methyl ether 9 were sensative to dilute sulfuric acid and cyclized under this condition to form the aryl methylthio ether (10)
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