Dihydrooxadiazinones and method for making

Details Dihydrooxadiazinones and method for making Dihydrooxadiazinones and method for making

1977-06-22

1979-06-12

Randolph, John D.

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

Organic compounds

Chalcogen in the nitrogen containing substituent

C07D27304

Patent

active

041580940

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:
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patent: 4097425 (1978-06-01), Niznik
patent: 4097671 (1978-06-01), Niznik
Rosenblum et al., J. Am. Chem. Soc., vol. 85, pp. 3874-3878, (1963).
Miller, Diss. Abstr. Intl. B 1974, p. 5908.
Rosenblum et al., J. Am. Chem. Soc., vol. 87, pp. 5716-5719, (1965).
Rosenblum et al., J. Am. Chem. Soc., vol. 90, pp. 1061 to 1062, (1968).
Miller, PHD Thesis, Univ. of Illinois, (1973), 88 pages, pp. 1 to 39 and frontispage material provided only.

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