Key indicatorsSingle-crystal X-ray study T = 293 K Mean '(C±C) = 0.004 A Ê R factor = 0.061 wR factor = 0.122 Data-to-parameter ratio = 14.5For details of how these key indicators were automatically derived from the article, see

Various polyfluoro-cyclic olefins have been treated with several alcohols in the presence of a base, and the ethers formed fully characterised. Each reaction, with one exception, gave two mono-alkoxy-olefins, one substituted in the vinylic position, the other in the allylic positioc, by what appears to be an addition-elimination pathway; the ratio of these ethers varied with the alcohol and olefin used. I n the characterisation of these olefinic ethers, potassium permanganate oxidation gave a number of new alkoxypolyfluorodibasic acids.View Article Online centred a t 4.5 (intensity ratio 1).Reaction of 2,2,3,3-TetrafEuoropropan-l-ol with Decafluorocyc1ohexene.-In the usual way (E 2.67 x lo3) (in ethanol).

The title compound, C10H8O2S2, is the 3‐thienyl symmetric analog of benzoin. 3,3′‐Thenoin can be synthesized in good yield utilizing the benzoin condensation reaction (starting with 3‐thio­phene­carbox­aldehyde). The crystal structure of 3,3′‐thenoin has been determined at room temperature. There are two independent mol­ecules per asymmetric unit and each has a thienyl ring flip disorder involving one of the two rings in each mol­ecule.

The title compound, C10H8O2S2, is the 2‐thienyl symmetric analog of benzoin. 2,2′–Thenoin can be synthesized in good yield utilizing the benzoin condensation reaction (starting with 2‐thio­phene­carbox­aldehyde). The crystal structure of 2,2′‐thenoin has been determined at room temperature.

No abstract