Corey reagent

In A -3-keto-5jS-H steroids (7) the attack of the Corey reagent occurs towards the ) -face forming 1 j8,2j6-methylene-5) -H compounds (8). The / -configuration of the cyclopropane ring was established by conversion of (8) into the corresponding IjS-methyl compound. ... 

Oxocoronaridine (105, C21H24N203, MP 140° [a]D —27°) is relatively widespread in Tabernaemontanae (Table I) and it was obtained by mild oxidation (Corey reagent) to 103. The fully assigned H-NMR spectrum of 105 has also been reported (Table IV). 

The most widely used chromium(VI)-oxo reagents for synthetic use in organic chemistry are the Collins reagent, Cr03(py)2,273 and the Corey reagent, Cr03CrpyH+,297 with the latter being superior for the oxidation of primary alcohols to aldehydes.275... 

Dipyridyl Disulfide (Aldrithiol, Corey Reagent) Aldrichimica Acta 1971, 4,33... 

The other Corey reagent, pyridinium dichromate (PDC), (C5H5NH )2Cr207 , dissolved in dimethylformamide (DMF) will oxidize allylic alcohols to a,)3-unsaturated aldehydes without oxidizing the aldehyde to the carboxylic acid. ... 

Regiospecific oxidation of the 3-hydroxy-group of methyl fusidate has been accomplished by use of the Corey reagent (one equivalent of AT-chlorosuccinimide-dimethyl sulphide complex). 

One of the important functionalizations of the keto function is the epoxidation using the Corey reagent (dimethylsulfoniumethylide in DMSO and THF) as reported by Qelas and Gelas (41,42) (Scheme 10). 

Methylsulphinylmethyl (dimsyl) sodium, the Corey reagent, is usually obtained from DMSO and sodium hydride under heating. The temperature range for this reaction is narrow below 70°C the process is too slow, and the anion is unstable above 85°C. Significant progress was made by Sjoberg, who sonicated the DMSO-NaH mixture at 50°C for 1 h and obtained a clear solution of the reagent, which was stable for several weeks (Eq. 77).226... 

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