Preparation of esters of optically active 2-arylalkanoic acids

Details Preparation of esters of optically active 2-arylalkanoic acids Preparation of esters of optically active 2-arylalkanoic acids

1985-02-04

1987-11-17

Berch, Mark L.

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

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

560 8, 560100, 560103, 546174, 546341, 549 79, C07C 6976, C07D21315, C07D24112, C07D33324

Patent

active

047075490

ABSTRACT:
Esters of optically active 2-arylalkanoic acids I ##STR1## where Ar is an isocyclic or heterocyclic aryl radical and R.sup.1 and R.sup.2 are each C.sub.1 -C.sub.4 -alkyl, are prepared by subjecting an optically active ester II ##STR2## where X is Cl, Br or --O--SO.sub.2 --Y and Y is Cl or a hydrocarbon radical, to a Friedel-Crafts reaction with an aromatic compound ArH (III).

REFERENCES:
patent: 4539420 (1985-09-01), Tsuchihashi et al.
Nakajima et al., Bull. Chem. Soc. Jap. 52(8) (1979), pp. 2377-2382.
Derwent No. 18928K/08 (corresponds to Japanese Preliminary Published Application No. 8045/1983).
Masuda, et al., Chem. Abstracts, vol. 99 (1983), entry 121891n.
Masuda, et al., Chem. Abstracts, vol. 93 (1980), entry 46073z.
Segi, et al., Chem. Abstracts, vol. 96 (1982), entry 161783e.
Suga, et al., Chem. Abstracts, vol. 96 (1982), entry 51512h.

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