Process for the preparation of novel stabilized phosphorus ylide

Details Process for the preparation of novel stabilized phosphorus ylide Process for the preparation of novel stabilized phosphorus ylide

1997-08-18

1999-01-05

Higel, Floyd D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Nitriles

558388, 568 13, 568 17, C07F 954, C07F 9547, C09B 4700, C07B 3710, G03C 110

Patent

active

058565582

ABSTRACT:
The present invention relates to novel stabilized phosphorous ylides and processes for their preparation. More particularly, the present invention relates to a process for substituting the carbonyl oxygen of 2-formyl- or 2-oxoalkylidenetriphenyl-phosphoranes (OATP) by other stabilizing groups to form novel compounds having an increased tendency to form complexes or compounds which absorb in the visible region of the spectrum.
The compounds according to the present invention are

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H.J. Bestmann et al., Chem. Ber. 95, (1962), p. 1513.
Y. Sheng et al., Synthesis, (1984), p. 924.
H. Hoffmann et al., Tetrahedron Letters, No. 17, (1964), p. 983.
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D.B. Denny et al., J. Org. Chem. vol. 27, (1962), p. 998.

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