Dihydrooxadiazinones and method for making

Details Dihydrooxadiazinones and method for making Dihydrooxadiazinones and method for making

1975-08-28

1978-06-27

Waddell, Frederick E.

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

Organic compounds

Chalcogen in the nitrogen containing substituent

C07D27304

Patent

active

040976718

ABSTRACT:
Dihydrooxadiazinones are provided which can be used as blowing agents in various thermoplastic polymeric materials to produce high performance thermoplastic foams. A ketone having at least one .alpha.-hydrogen atom is halogenated and hydroxylated to produce an .alpha.-hydroxyketone. Condensation of the .alpha.-hydroxyketone with an organocarbazate produces the corresponding carboorganooxyhydrazone which is cyclized to a dihydrooxadiazinone.

REFERENCES:
J. Am. Chem. Soc., vol. 85, 3874-3878.

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