- THIO-CLAISEN REARRANGEMENT OF TROPONOIDS
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Several 2-(allylthio)tropones and 2-(propargylthio)tropones gave 2,3-dihydro-(8H)-cycloheptathiophen-8-ones and (8H)-cycloheptathiophen-8-ones via a thio-Claisen rearrangment by heating above 180 deg C.In cases of γ-substituted allyl derivatives, the results of rearrangement were poor; 2-(prenylthio)tropone gave isoprene by an elimination, similar to 2-(allyloxy)tropones, while its 3,5,7-trimethyl homolog caused no reaction.
- Takeshita, Hitoshi,Uchida, Kingo,Mametsuka, Hiroaki
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p. 1709 - 1712
(2007/10/02)
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