2-Aminopyrrolin 5-ones and aminocyclopropyl isocyanates therefro

Details 2-Aminopyrrolin 5-ones and aminocyclopropyl isocyanates therefro 2-Aminopyrrolin 5-ones and aminocyclopropyl isocyanates therefro

1981-03-03

1983-04-19

Torrence, Dolph H.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

204158R, 20415911, 260453A, 260453AR, 260453P, 528 45, 528423, C07D20726, C07C11800, C07C119045

Patent

active

043806473

ABSTRACT:
Subjecting 1,4-bis-[(pyrrolin-3-onyl)methylamino]-2-butyne to ultraviolet irradiation effects rearrangement in greater than 80% yield to 1,4-bis-[(isocyanatocycloprolpyl)methylamino]-2-butyne. The diisocyanate is useful in the synthesis of polyurethanes and polyureas and also for the in situ photochemical generation of a cross-linking agent for polyurethanes and structurally related polymers.

REFERENCES:
Comstock et al., Am. Chem. J., (1891), 13, 522.
Nagasaka et al., Heterocycles, vol. 9, No. 10, pp. 1375-1380 (1978).
Koch et al., J. Am. Chem. Soc., 95, 2957 (1973).

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