cas 21732-47-8, 2,2':4',2''-Terthiophene | Articles data ｜lookchem

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21732-47-8

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Curtis et al.
p. 165
(1969)
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Attempted Simmon-Smith reaction on β-alkylthio-α,β- unsaturated ketones: A regiospecific synthesis of 2,4-disubstituted thiophenes
A new regiospecific route to 2,4-disubstituted thiophenes has been developed through Simmon-Smith reaction on β-methylthio-α,β- unsaturated ketones. Extension of the reaction to β-ethyl/benzylthio- α,β-unsaturated ketones also gave the corresponding 2,4-disubstituted thiophenes in a regiospecific manner. A probable mechanism involving a carbenoid methylene insertion to divalent sulfur followed by intramolecular aldol condensation has been suggested.
Swaroop, Toreshettahally R.,Roopashree, Rangaswamy,Ila, Hiriyakkanavar,Rangappa, Kanchugarakoppal S.
p. 147 - 150
(2013/02/21)

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Chemical Properties

Melting Point: 53-54 °C (decomp)
Boiling Point: 337.9±32.0 °C(Predicted)
Density: 1.318±0.06 g/cm3(Predicted)
PSA: 84.72000
LogP: 5.20510

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