5-Substituted phosphonate hydantoins and derivatives thereof

Details 5-Substituted phosphonate hydantoins and derivatives thereof 5-Substituted phosphonate hydantoins and derivatives thereof

1978-03-09

1979-03-20

Welsh, M. J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

260 457P, 260 458N, 260830TW, 521165, 528287, 528367, 548309, 548310, 548312, 548313, C08G 1838

Patent

active

041455100

ABSTRACT:
Hydantoins of the formula ##STR1## wherein R.sub.1 is hydrogen or alkyl of 1 to 8 carbon atoms, R.sub.2 is ##STR2## R.sub.3 is alkyl of 1 to 8 carbon atoms, and X is a straight or branched chain alkylene of 1 to 4 carbon atoms or a straight or branched chain alkylene of 3 to 6 carbon atoms containing an internal carbamido group; or R.sub.1 and R.sub.2 together are Y where Y is a straight or branched chain alkylene of 4 to 8 carbon atoms having a pendant ##STR3## ARE PREPARED BY REACTING FIRST .alpha.,.beta.-UNSATURATED ALDEHYDES OR KETONES WITH ALKYL PHOSPHITES TO FORM A PHOSPHONATE ALDEHYDE OR KETONE FOLLOWED BY A CLASSICAL Bucherer hydantoin synthesis.

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