“…Oxidation of (287) to the sulphoxide (288) and thermal elimination of phenylsulphenic acid leads ultimately to (285).z55 The keto-epoxide (289) gives a mixture of ( 290) and the Favorskii-type product (29 1) when it is treated with NaOEt. 256 The eucarvone epoxide (292), which can be derived from car-3-en-2-one (293), yields the ethers (294) when it reacts with HClO, and R'OH (R' = alkyl) and the chlorohydrin (295) with HCl. 257 The reaction of the derivative (296) with HC1 gives a mixture of ( 297) and (298).…”