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First P-trifluoromethylated ylides (1996)

Dieckbreder, Uwe ; Lork, Enno ; Röschenthaler, Gerd-Volker ; [et al.]

New York, NY [u.a.] : Wiley-Blackwell

Heteroatom Chemistry 7 (1996), S. 281-284

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ISSN: 1042-7163

Keywords: Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Trifluoromethylated phosphines R2PCF3 (R = NEt2, Me, 1Pr) were methylated by CH4OSO2CF3, yielding the corresponding phosphonium salts [R2P(CF3)CH3] [F3CSO3]. Treatment with LiN(SiMe3)2 at -80°C furnished the phosphorus ylides R2P(CF3) = CH2 that could be trapped by use of hexafluoroacetone with formation of stable 1,2λ5σ5-oxaphosphetanes. The single-crystal X-ray structure determination of one of these oxaphosphetanes showed a distorted trigonal bipyramid at phosphorus with the P-CF3 group in an axial position. © 1996 John Wiley & Sons, Inc.

Additional Material: 2 Ill.

Type of Medium: Electronic Resource

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