| 摘要 |
PCT No. PCT/GB97/02324 Sec. 371 Date Mar. 3, 1999 Sec. 102(e) Date Mar. 3, 1999 PCT Filed Sep. 1, 1997 PCT Pub. No. WO98/09937 PCT Pub. Date Mar. 12, 19981,2 and 1,3-dinitrate esters are prepared from polyols containing 1,2- or 1,3-diol fragments using an alkyl or aryl boronic acid to form a cyclic boronate ester derivative which is then reacted with dinitrogen pentoxide to directly generate the dinitrate ester. In the cyclic ester from the 1,2- or 1,3-hydroxyl groups are protected and other reactions may then be carried out on other parts of the molecule of which the fragment form a part, leaving the dinitrate ester to be produced subsequently in the final step. High yields are obtained at both stages.
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