| 摘要 |
Polyalkylpiperidine cpds. of formula (I) are new: Y = -<10>O-<9>N- or -<9>N-<10>O; R<1>, R<2> = H or alkyl; R<3>, R<4> = H or alkyl, or R<3> + R<4> + the ring carbon may form a 5- to 12- membered ring; n = 1, 2 or 3; if n = 1, A = -COOR<5>, -P(OR<6>)(OR<7>), -Si(R<5>)3, -Si(R<5>)3 or a gp. of formula (a); if n = 2, A = -CO-, >POR<5>, >Si(OR<5>)2, >Si(R<5>)2 or (b); if n = 3, A = SiOR<5>, SiR<5> or (c); R<5> = 1-18C alkyl, 2-18C alkenyl or alkynyl, 5-12C cycloalkyl, 6-10C bicycloalkyl, 5-8C cycloalkenyl, 6-10C aryl, 7-9C aralkyl or 7-9C alkaryl, opt. substd. with 1-4C alkyl or Ph; R<6>, R<7> as for R<5>, or a residue of formula (II) or (III): X = direct bond, -CH2- or 2-5C 1,1-alkylidene; R<8>, R<9> = -OR<5>, -NHR<5> or -NR<11>R<12>, or one of these gps. may have the formula (d) or (e); R<10> = H, 1-12C alkyl, 5-7C cycloalkyl, 7-9C aralkyl, 8-18C alkanoyl, 3-5C alkanoyl, -COPh or (f); R<11>, R<12> = 1-10C alkyl, 5-7C cycloalkyl or 6-10C aryl, or R<11> + R<12> plus the N atom may form a 5- to 12-membered ring, opt. also contg. O. |
