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Primary Examiner: Weinberger, Lorraine A.
Assistant Examiner: Myers, Jane S.
Attorney: Wenderoth, Lind & Ponack

Next ten patents ordered by date:

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Title: Preparation of optically active allethrorone via allethronyl acid phthalate

Abstract: Optically active allethronyl acid phthalate is prepared by reacting (.+-.)-allethronyl acid phthalate of the formula ##SPC1## With an optically active amine from the group of .alpha.-phenylethylamine of the formula, ##SPC2## .alpha.-phenyl-.beta.-p-tolylethylamine of the formula ##SPC3## Threo-2-dimethylamino-1-(p-nitrophenyl)-1,3-propanediol of the formula ##SPC4## And naphthylethylamine of the formula ##SPC5## To form diastereomeric salts thereof, and decomposing the resolved salt to obtain the optically active allethronyl acid phthalate.

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Inventors: Horiuchi, Fukashi (Kawani, JA)

Application Number: 453997
Filing Date: 1974-03-22
Publication_date: 1976-01-06
Assignee: Sumitomo Chemical Company, Limited (Osaka, JA)
Primary Class(es): 560/84 568/346, 568/379
Other Classes:
US Patent Ref:

3201455	Aug, 1965	Russell et al.	260/475.
3484489	Dec, 1969	Kierstead et al.	260/475.

Other Refs: 2,263,880

Jul, 1973	DT

Other References: Eliel, Stereochemistry of Carbon Compounds, pp. 49-56 (1962).
Fukumaru et al., as cited in Chem. Abstracts, 74, 42127e (1971).
Muller et al., as cited in Chem. Abstracts 69, 2698g (1968).
Bucourt et al., as cited in Chem. Abstracts 72, 31304t (1970).