Sulfones, vinyl phenyl

Verify, by making molecular models, that the bonds to sulfur are arranged in a trigonal pyramidal geometry in sulfoxides and in a tetrahedral geometry in sulfones. Is phenyl vinyl sulfoxide chiral What about phenyl vinyl sulfone ... 

Vinyl-phenyl-sulfone werden uberwiegend an der CVinyl-S-Bindung gespalten4-6 ... 

Phenyl N-phenylphosphoramidochloridatc, 416 Phenylselenenylation, 219 Phenyl selenocyanate, 33, 416-417 (3-Phcnylselcnoindole, 37, 38 N-Phenylselenophthalimide, 417-418 3-Phenylseleno sulfones, 407, 408 (3-(Phenylseleno)vinyl sulfones, 408 Phenyl sulfates, 410 Phenylsulfinylacetonitrile, 418-419 4-(Phenylsulfmyl)butyric acids, 1... 

LAH-CuCh used in moderate to large excess desulfurizes sulfides and dithioketals in good to very good yields (55-87%), but with allyl sulfides, migration of the double bond occurs. Finally vinyl phenyl sulfones are reductively cleaved in good yields (65%) without reduction of C=-C bonds even by an excess of reagent. ... 

Phenyl vinyl sulfone and phenyl vinyl sulfoxide have been used as diylophiles to synthesize prostaglandin precursors (Table l)12. Only the two regioisomeric fused products 6 were formed, which were transformed to the prostaglandin precursors without separation. 

Cholesteryl(4-vinyl) phenyl carbonate or phenyl(4-vinyl)phenyl carbonate Seed latex (MMA or MMA/EDMA or styrene or styrene/DVB) sodium lauryl sulfonate water peroxodisulfate Using covalently bonded templates core-shell emulsion polymerization [96]... 

The use of phenyl vinyl sulfone or phenyl vinyl sulfoxide as the dienophile allows for aromatization by elimination of the sulfur substituent (Equation (152)) <89LA1275>. 

To date, many functional alkenes, such as maleates, fumarates, and vinyl phenyl sulfones, have been employed as dipolarophiles, successfully (Figure 2.1). The attractiveness of 1,3-DC reactions of azomethine ylides with alkenes is due to the fact that pyrrolidine derivatives with up to four stereocenters can be generated in a single operation from readily available starting materials. As a result, the 1,3-DC of azomethine... 

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