Process for preparing N-tert-butoxycarbonylmaleimide

Details Process for preparing N-tert-butoxycarbonylmaleimide Process for preparing N-tert-butoxycarbonylmaleimide

1992-07-17

1993-09-21

Brust, Joseph Paul

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D20724

Patent

active

052470962

ABSTRACT:
A process is described for preparing N-tert-butoxycarbonylmaleimide from maleimide and di-tert-butyl dicarbonate which comprises reacting maleimide with di-tert-butyl dicarbonate in the presence of a basic compound of the general formula I ##STR1## in which A represents the ring members required to complete a five- or six-membered saturated ring and R is (C.sub.1 -C.sub.4)alkyl, in one stage to give the end product.
In a preferred embodiment, the compound of the general formula I is N-methylmorpholine.
The product is useful as a monomer for polymerization, with the styrene copolymers being particularly suitable for chemically reinforced radiation-sensitive mixtures.

REFERENCES:
patent: 4775609 (1988-10-01), McFarland
patent: 4876343 (1989-10-01), Hodges et al.
patent: 4900834 (1990-02-01), Kruger et al.
Fieser, et al., Reagents for Organic Synthesis, vol. 4, (1974), p. 128.
Fieser, et al., Reagents for Organic Synthesis, vol. 8, (1980), pp. 57-58.
Fieser, et al., Reagents for Organic Synthesis, vol. 7, (1979), p. 91.
"Abstract of Papers" of the Polymer Society of Korea Fall National Meeting, Oct. 13-14, 1989, pp. 56-57.
Greene, "Protective Groups in Organic Synthesis" p. 232, New York, 1981.

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