| 摘要 |
<p>Diarylphenoxy-aluminum compound (A), obtained by a reaction of bis(diarylphenol) ligand (I) with aluminum compound (II) and/or aluminum compound (III), is new. Diarylphenoxy-aluminum compound, obtained by a reaction of bis(diarylphenol) ligand of formula (I) with aluminum compound (II) of formula ((R 14>) 3-pAlH p) and/or aluminum compound (III) of formula (MAlH 4), is new. T : 1-6C-alkyl, 1-6C-perfluoroalkyl, 1-6C-alkoxy, 7-12C-aralkyl, halo, optionally substituted 6-10C-aryl or NO 2; Ar 1>-Ar 4>6-15C aryl or 2-15C heteroaryl (optionally substituted by 1-7 substitutions of T, SiR 5>aR 6>aR 7>a, NR 8>aR 9>a or SR 1>0a); either R 1>-R 4>H, T, SiR 5>bR 6>bR 7>b, NR 8>bR 9>b or SR 1>0b; or A+R 1>-R4 : aromatic or non-aromatic cycle; D : O, S, NR 11>, C(O), S(O) and/or S(O) 2; A : 1-25C-hydrocarbon, heteroatom of D, T, 1-10C-acyloxy, SiR 5>cR 6>cR 7>c, 2-10C-heteroaryl, NR 8>cR 9>c, SR 1>0c, 1-12-acyl, 1-10C-carboxyl, 6-15C-aryl or 2-15C-hereroaryl optionally substituted by 1-5 substitutions of T, SiR 5>dR 6>dR 7>d, NR 8>dR 9>d, SR 10>d, heteroatom of D, P(R 11>), (R 11>)P(O) or Si(R 12>R 13>); R 5>a-R 5>d, R 6>a-R 6>d, R 7>a-R 7>d, R 10>a-R 10>d, R 11>-R 13>, R 11>a : 1-6C-alkyl, 7-12C-aralkyl and/or optionally substituted 6-10C-aryl; either R 8>a-R 8>d, R 9>a-R 9>d : 1-6C-alkyl, 7-12C-aralkyl and/or optionally substituted 6-10C-aryl; or R 8>aR 9>a, R 8>bR 9>b, R 8>cR 9>c, R 8>dR 9>d : 2-8C cyclic hydrocarbon containing one or more hetero atoms of O, S or NR 11>a; Al : aluminum; R 14>1-5C-alkyl; p : 0-3; and M : Li, Na or K. Independent claims are included for: (1) a preparation of isopulegol (IV) comprising cyclization of citronellal (V) in the presence of (I) as a catalyst; and (2) a method for preparing menthol comprising preparing (IV) and subsequently hydrogenating the ethylenic double bonds in (IV). [Image].</p> |
