Synthesis of bis(2,2-dinitropropyl) formal (BDNPF)

Details Synthesis of bis(2,2-dinitropropyl) formal (BDNPF) Synthesis of bis(2,2-dinitropropyl) formal (BDNPF)

1994-11-14

1995-09-12

Evans, Joseph E.

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

Organic compounds

Oxygen containing

149 88, C07C 4150, C07C 4330

Patent

active

054498350

ABSTRACT:
A nonsolvent process of synthesizing bis(2,2-dinitropropyl)formal (BDNPF) is disclosed. In the process, 2,2-dinitropropanol (DNPOH) is reacted at low temperature with a formaldehyde source in the presence of a protic acid catalyst, such as H.sub.2 SO.sub.4, HCl, H.sub.3 PO.sub.4, or HBr. To inhibit byproduct formation, the reaction temperature is maintained from about -30.degree. C. to 30.degree. C. Upon completion of the reaction, the reaction solution is quenched with water and washed with an aqueous hydroxide ion solution. The hydroxide ion concentration should be sufficient to neutralize the protic acid catalyst during the quenching step and to solubilize unreacted 2,2-dinitropropanol as well as other aqueous soluble byproducts in the reaction solution. The BDNPF product is extracted with a low boiling temperature polar organic solvent, such as methyl tert-butyl ether (MTBE) or equivalent solvent. The organic solvent is evaporated to yield usable BDNPF product. The resulting yield is at least 60% based on the starting quantity of 2,2-dinitropropanol.

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