Optically active beta-aminoalkoxyborane complex

Details Optically active beta-aminoalkoxyborane complex Optically active beta-aminoalkoxyborane complex

1997-04-29

1998-09-15

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546203, 546205, 564355, 564387, C07D20708, C07D21122

Patent

active

058080988

ABSTRACT:
1. An optically active .beta.-aminoalkoxyborane complex of the formula (I): ##STR1## wherein R.sup.1 is C.sub.1 -C.sub.8 alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.7 -C.sub.11 aralkyl or C.sub.6 -C.sub.10 aryl, R.sup.2 is hydrogen, C.sub.1 -C.sub.8 alkyl, C.sub.3 -C.sub.7 cycloalkyl or C.sub.7 -C.sub.11 aralkyl, or R.sub.1 and R.sup.2 together form (CH.sub.2).sub.n wherein n is 3 or 4, and Ar is naphthyl, anthryl or phenanthryl, which may be substituted by from 1 to 3 substituents selected from the group consisting of halogen, nitro, C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.2 -C.sub.6 alkenyl, C.sub.2 -C.sub.6 alkynyl, C.sub.7 -C.sub.11 aralkyl, C.sub.6 -C.sub.10 aryl, C.sub.1 -C.sub.6 alkoxy and styrene polymer substituents.

REFERENCES:
patent: 2573606 (1951-10-01), Rieveschl et al.
patent: 4719049 (1988-01-01), Blair
patent: 4719055 (1988-01-01), Blair
patent: 4897490 (1990-01-01), Sit et al.
H. Hashizume et al., "Resolution of D,L-Pantolactone", Chemical Abstracts, Abstract No. 38872p, vol. 110, No. 5, 30 Jan. 1989.
E. J. Corey et al., "Enantioselective Route to a Key Intermediate in the Total Synthesis of Ginkgolide B", Tetrahedron Letters, vol. 29, No. 26, pp. 3201-3204, 1988.
Takeshi Hanamoto et al., "A Facile Entry to .beta.,.delta.-Dihydroxy Esters", Tetrahedron Letters, vol. 29, No. 49, pp. 6467-6470, 1988.
M. Cegla, "Chiral N-(Arylalkyl)-2-Amino-1-Butanol Derivatives as Stereoselective Reduction Agents of Ketones", Chemical Abstracts, Abstract No. 39327q, vol. 107, No. 5, 3 Aug. 1987.
T.R. Govindachari et al., Tetrahedron, vol. 14, 1961, pp. 284-287, "Chemical Examination of Tylophora Asthmatica-IV".
B. Chauncy et al., Aust. J. Chem., vol. 22, pp. 427-429, 1969, "A New Synthesis of Phenanthroindolizidine".
B. Chauncy et al., Aust. J. Chem., vol. 23, pp. 2503-2516, 1970, "Synthesis of Phenanthroindolizidines".

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