Process for producing alpha-(benzylidene)acetonylphosphonates

Details Process for producing alpha-(benzylidene)acetonylphosphonates Process for producing alpha-(benzylidene)acetonylphosphonates

1988-01-19

1989-11-07

Sutto, Anton H.

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

Organic compounds

Phosphorus esters

558142, 558178, C07F 921

Patent

active

048794007

ABSTRACT:
A process for producing an .alpha.-(benzylidene)acetonylphosphonate of the formula: ##STR1## wherein Ar is phenyl substituted by at least one substituent selected from the group consisting of fluorine, chlorine, bromine, nitro, chloromethyl, dichloromethyl, trichloromethyl, trifluoromethyl, --CO.sub.2 R.sup.7 wherein R.sup.7 is C.sub.1 -C.sub.5 alkyl, --CONR.sup.7 R.sup.8 wherein R.sup.7 is as defined above and R.sup.8 is C.sub.1 -C.sub.5 alkyl, --C(O)R.sup.7 wherein R.sup.7 is as defined above, --OC(O)R.sup.7 wherein R.sup.7 is as defined above, --OSO.sub.3 R.sup.7 wherein R.sup.7 is as defined above, --OCF.sub.3, --S(.dbd.O).sub.2 R.sup.7 wherein R.sup.7 is as defined above, --CN and --SO.sub.3 R.sup.7 wherein R.sup.7 is as defined above, and each of R.sup.1 and R.sup.2 which may be the same or different is a saturated or unsaturated C.sub.1 -C.sub.12 aliphatic group, or R.sup.1 and R.sup.2 together form 1,2-ethylene, 1,3-propylene or 1,4-butylene, which is unsubstituted or substituted by from one to four C.sub.1 -C.sub.3 alkyl groups, which comprises:
(a) reacting an aldehyde of the formula:

REFERENCES:
patent: 3047606 (1962-07-01), Wadsworth, Jr.
Moita et al., "Bull Pharm Bull Tokyo", 35(9), (1987), 3898-904, abstract in ICI, vol. 109, Issue 1274, (1988).

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