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Lithium phenylethynolate

LACTAMS Di-n-butyltin oxide. Ily-droxylamine-O-sulfonic acid. Iodine azide. Sodium eyanoborohydride. (3-LAC TAMS Cyanuric chloride. Grignard reagents. Ion-exchange resins. Lithium phenylethynolate. Sodium dicarbonyl-cyclopentadienylferrate. Titanium(lll) chloride. Titanium(IV) chloride. Tri-phenylphosphino-Carbon tetrachloride. Triphenylphosphine-Die thyl azodicar-boxylate. Triphenylphosphine-2,2 -Dipyridyl disulfide. [Pg.475]

Lithium phenylethynolate (520) has been prepared in a rather intriguing fashion through the elimination of benzonitrile from 5-lithio-3,4-diphenylisoxazole (519) (75AG(E)765). Reaction of the ynolate with an aldehyde or ketone was shown to afford a metallated /3-lactone (521). Treatment of this intermediate in turn with an electrophilic reagent such as benzyl bromide produced a tri- or tetra-substituted /3-lactone (522 Scheme 114). [Pg.462]

Lithium phenylethynolate (41), which is readily obtained from 3,4-diphenylisoxazole and butylli-thium, reacts with aldehydes and ketones to yield 2-oxetanones after protonation (Scheme 44). [Pg.116]

Lithium naphthalenide, 247 Lithium phenylethynolate, 247-248 Lithium phenylthio( trimethylstannyl)-cuprate, 289... [Pg.263]

P-Lactams. Lithium phenylethynolate (1) reacts with imines (2) to give fi-Inctiims (3) presumably via a. [Pg.395]

As shown in Scheme 4, a new approach to 3-methylene-azetidin-2-ones has been described. The reaction of the acrylamide (16) with n-butyl-lithium, followed by the addition of toluene-4-sulphonyl chloride, gives the azetidinone (17), in 60% yield. In the same paper it is reported that lithium phenylethynolate reacts with imines (in a highly stereoselective manner) to form azetidinones, in a promising new approach to functionalized azetidinones. [Pg.60]

ALKENES Allyl dimethyldithiocarbamate. Bis(t -cyclopentadienyl)niobium trihydride. Cyanogen bromide. Di-n-butylcopperlithium. a,o-Dichloromethyl methyl ether. 2,3-Dimethyl-2-butylborane. N,N-Dimethyl dichlorophosphoramide. Diphenyl diselenide. Di-n-propylcopperlithium. Ferric chloride. Grignard reagents. Iodine. Lithium phenylethynolate. Lithium 2,2,6,6-tetramethylpiperidide. Methyl iodide. o-Nitro-phenyl selenocyanate. Propargyl bromide. rra s-l-Propenyllithium. Selenium. Tetrakis(triphenylphosphine)palladium. Titanium(IH) chloride. Titanium trichloride-Lithium aluminum hydride. p-Toluenesulfonylhydrazine. Triphenylphosphine. Vinyl-copper reagents. Vinyllithium. Zinc. [Pg.784]

Lithium methylsulfinylmethylide, 342 Lithium methyl(vinyl)cuprate, 342-343 Lithium naphthalenide, 415 Lithium organocuprates, 225 Lithium perchlorate, 103 Lithium phenylethynolate, 343 Lithium phenylthio(alkyl)cuprates, 344, 465... [Pg.377]

ALKENES Cuprous iodide. Diisobulylaluminum hydride. Dipropenylcopperlithium. Ethyl a-trifluoromethylsulfonyloxy acetate. Iodine. (l-LithiovinyI)tinnethylsilane. Lithium dialkyl cuprates. Lithium phenylethynolate. Methylcopper. Methylhthium. Sodium bislrimetliylsilylamide. Thioiiyl chloiide-Trietliylamine. Titanium(O). p-Toluenesulfonic acid. Tri./. butyltin chloride. Tricthyl orthoformatc. [Pg.222]

P-I.ACTONES Lithium phenylethynolate. Peroxybenziinidic add. t-LACTONES Trimethyl phosphonacctatc. [Pg.470]

See other pages where Lithium phenylethynolate is mentioned: [Pg.697]    [Pg.697]    [Pg.697]    [Pg.395]    [Pg.697]    [Pg.343]    [Pg.789]    [Pg.345]    [Pg.559]    [Pg.732]    [Pg.109]   
See also in sourсe #XX -- [ Pg.247 ]

See also in sourсe #XX -- [ Pg.343 ]

See also in sourсe #XX -- [ Pg.210 ]



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2-Azetidinones via lithium phenylethynolate cycloaddition

2-Oxetanones via lithium phenylethynolate cycloaddition

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