On May 31, 2020, Onuki, Yuta; Nambu, Hisanori; Yakura, Takayuki published an article.Computed Properties of 5034-06-0 The title of the article was Ring-opening cyclization of spirocyclopropanes using sulfoxonium ylides. And the article contained the following:
Ring-opening cyclization of cyclohexane-1,3-dione-2-spirocyclopropanes I (R = H, Me, Ph; R1 = H, Me; R2 = H, Ph, 4-methylphenyl, 4-bromophenyl, n-butyl; n = 1) using dimethylsulfoxonium methylide proceeded regioselectively to produce 2,3,4,6,7,8-hexahydro-5H-1-benzopyran-5-ones II (R3 = H; n = 1) in good to high yields. The reactions of cycloheptane- and cyclopentane-1,3-dione-2-spirocyclopropanes I (R = H; R1 = H; R2 = phenyl; n = 0 or 2) could construct [7.6]- and [5.6]-fused ring systems II (R3 = H; n = 0 or 2). This reaction was also carried out using triethyl(oxo)-sulfanylium chloride, tributyl(oxo)-sulfanylium chloride, and benzyldimethyloxo-sulfanylium chloride, resulting in the formation of the corresponding 2,3-trans-disubstituted products III (R4 = Ph; R5 = Me, Pr, phenyl) and II (R = H; R1 = H; R2 = H; R3 = Ph; n = 1) in good to high yields, and it was shown that the di-Me group can act as a dummy substituent. It was found that the 2- and 3-phenyhexahydrobenzopyran-5-ones II (R = H; R1 = H; R2 = H, phenyl; n = 1) can be readily converted into 5-hydroxyflavan and 5-hydroxyisoflavan, resp. The experimental process involved the reaction of trimethyloxosulphonium chloride(cas: 5034-06-0).Computed Properties of 5034-06-0
The Article related to hexahydrobenzopyranone preparation regioselective, spirocyclopropane sulfonium ylide ring opening cyclization, flavan, isoflavan, ring-opening cyclization, spirocyclopropane, sulfoxonium ylide and other aspects.Computed Properties of 5034-06-0
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Chloride – Wikipedia,
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