| 摘要 |
<p>Alpha-Acyloxymino-alkanephosphonic or phosphinic acid esters of formula (I) are new: R1 = (i) 1-8C alkyl, 2-8C alkenyl, 2-8C alkynyl, 5-8C cycloalkyl, phenyl or naphthyl, all opt. mono- or polysubstd. by halogen, 1-4C alkoxy, 1-4C alkyl, NO2, CF3, CN,2-5C alkoxycarbonyl, carbamoyl (opt. substd. by 1-4 C alkyl and/or phenyl), 2-7C alkanoyl, 2-7C alkanoylamino, benzoylamino, di-(1-4C alkyl)-amino, phenyl or phenoxy (the last two gps. being themselves opt. mono-or polysubstd. by halogen, 1-4C alkoxy, 1-4C alkyl, NO2, CF3 or CN); (ii) 2-5C alkoxycarbonyl; or (iii) carbamoyl opt. substd. by 1-4C alkyl or phenyl; R2 = 1-4C alkyl, 1-4C alkoxy or phenyl; R3 = 1-4C alkyl; R4 = H or 1-3C alkyl; Ar = phenyl, naphthyl or quinolyl, all opt. substd. by 1-3 halogens and/or by 1 or 2 of CF3, 1-4C alkyl, 1-4C alkoxy, CN, NO2, 2-7C alkanoyl or benzoyl; n = 1-4. - Pref. R1 = 1-8C alkyl or phenyl, both opt. substd. as above; R2 = 1-4C alkoxy; R4 = H or methyl; Ar = phenyl opt. substd. by 1-3 halogens; n = 1.</p> |
