| 摘要 |
N-(substd. cyclic alkyleneimine)-alpha- (3,5-di-alkyl-4-hydroxyphenyl)-alpha', alpha''-dialkyl acetamides of formula (I) are new. In ( I), R1, R2, R5, R6, R7, R8 and R9 = H; 1-12C (cyclo)alkyl gp.; alkylcycloalkyl, aryl or alkaryl contg 1-8C alkyl gps. A = (1) alkylidene gp. of formula (II) where R3 and R4 = 1-18C alkyl; or (2) 5-12C cycloalkyl or alkaryl contg. 1-8C in the alkyl gp.; B = a bond or alkylene gp. -(CH2)n where n = 1-8; R10 = H; 1-18C alkyl; O; or OH; X = N or CH; Y = H2 or O. N-methyl-N'-(2,2,6,6-tetramethyl-4- piperidinyl)-2-(3,5-di- t-butyl-4-hydroxyphenyl) -2-methyl-propionamide (Ia), N-isopropyl-N'-(2-(3,3,5,5-tetramethyl) -1-piperazin-2-onyl)ethyl)-2-(-3,5- di-t-butyl-4-hydroxyphenyl)-2-methyl propionamide (Ib) and N-(2,2,6,6-tetramethyl-4-piperidinyl) -N'-(2-(3,5-di-t-butyl-4-hydroxyphenyl)-2- methylpropanecarboxy-1)-1,6- hexane-diamine (Ic) are specifically claimed. In the prepn., a 2,6-dialkylphenol of formaula (III) is reacted with a ketone (dialkyl or alkaryl ketone, or (alkyl)cycloalkanone (alkyl gps. contg. 1-18C)), a haloform (CHCl3 or CHBr3); a piperidine or piperazine of formula (IV) and an alkali metal hydroxide to form (I). In (III) or (IV), R5 to 9 = H or 1-12C (cyclo)alkyl or alkaryl radicals; in B, n = 2-4.
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