nitric oxide with 1,5-dimethylhexa-2,4-diene 1a gives (E)-2,5-dimethyl-2,5-dinitrohex-3-ene7 as the major product. The structure was confirmed by X-ray crystallography, 2,2,5,5-Tetramethylpyrroline-1-oxyl 2a, which has been claimed to be formed in this reaction could not be isolated. The minor products were (E)-2,5-dimethyl-5-nitrohexa-1,3-diene 7, (E)-2,5-dimethyl-6-nitrohexa-2,4-diene8 (which interconvert
                                    一氧化氮与1,5-二甲基六-2,4-二烯1a的反应得到(E)-2,5-二甲基-2,5-二硝基己-3-烯7为主要产物。通过X射线晶体学确认无法分离出据称在该反应中形成的2,2,5,5-四甲基
吡咯啉-1-氧基2a的结构。次要产物为(ê)-2,5-二甲基-5- nitrohexa -1,3-二烯7,(ê)-2,5-二甲基-6- nitrohexa -2,4-二烯8(其相互转化经由一个独特的1,5-重排),(rac)-2,5-二甲基-4,5-二硝基己-2-烯11和(E)-2,5-二甲基-5-羟基-2-硝基己-2-烯13。