7205-94-9Relevant articles and documents
Aldehyde to Ketone Homologation Enabled by Improved Access to Thioalkyl Phosphonium Salts
Fragis, Meghan,Deobald, Jackson L.,Dharavath, Srinivas,Scott, Jeffrey,Magolan, Jakob
supporting information, p. 4548 - 4552 (2021/06/28)
Phosphines were previously unusable as Pummerer-type nucleophiles due to competing redox chemistry with sulfoxides. Here we circumvent this problem to achieve a formal phosphine Pummerer reaction that offers thioalkyl phosphonium salts that, in turn, give rise to diverse vinyl sulfides via Wittig olefinations. Thirty vinyl sulfides are thus prepared from (alkylthioalkyl)triphenyl phosphonium salts and aldehydes. The hydrolysis of these vinyl sulfides offers an efficient and versatile two-step one-carbon homologation of aldehydes to ketones.
Sulfone compound (by machine translation)
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Paragraph 0046, (2017/10/06)
[Problem] to safely and conveniently, highly selective, sulfide compound producing a sulfone compound. [Solution] pH is 9 - 12 under, water or water-insoluble solvent or an aromatic hydrocarbon-based solvent mixture, sodium hypochlorite is used as oxidizing agent, (1) (2) from the compound represented by the formula sulfide sulfone compound represented by the formula manufacturing method. (R1 And R2 Are each independently an alkyl, aryl, aralkyl, heteroaryl)[Drawing] no (by machine translation)
On the nature of the chain-extending species in organolithium initiated stereospecific reagent-controlled homologation reactions using α-chloroalkyl aryl sulfoxides
Hoyt, Amanda L.,Blakemore, Paul R.
, p. 2980 - 2982 (2015/06/02)
The reaction of an organolithium with an α-chloroalkyl aryl sulfoxide ostensibly generates an α-chloroalkyllithium by sulfoxide-lithium exchange, but the actual identity of the chain-extending species in chlorosulfoxide-based StReCH reactions is not certain. To explore this issue, racemic 2-cyclohexyl (4R?,5R?)-4,5-diphenyl-1,3,2-dioxaborolane was homologated by treatment with scalemic (S)-chloromethyl phenyl sulfoxide and n-BuLi (THF, -78 °C). The reaction proceeded without a detectable level of kinetic resolution, a finding consistent with chloromethyllithium being the active chain-extending species rather than a chiral sulfurane intermediate.