Method for preparing substituted mixed alkynyl ethers

Details Method for preparing substituted mixed alkynyl ethers Method for preparing substituted mixed alkynyl ethers

2005-04-19

2005-04-19

Desai, Rita (Department: 1625)

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

Organic compounds

Oxygen containing

Reexamination Certificate

active

06881869

ABSTRACT:
The present invention relates to a process for preparing mixed substituted alkynyl ethers. More particularly, the invention concerns the preparation of mixed ethers derived from a benzyl type alcohol and a substituted alkynyl alcohol. The process of the invention for preparing a benzyl/substituted alkynyl type mixed ether is prepared from a benzyl/alkynyl type mixed ether with a hydrogen atom on the triple bond is characterized in that it consists of reacting a mixed ether derived from a benzyl type alcohol and an alkynyl alcohol with a hydrogen atom on the triple bond with an alkylation agent, in the presence of an anionisation agent.

REFERENCES:
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patent: WO 9719040 (1997-05-01), None
patent: WO 9902475 (1999-01-01), None
Makabe et al, Heterocycles, vol. 43 No. 10, 1996.*
Hatayeyamna et al, Tetrahedron Letters, vol. 50, No. 47, pp13369-13373.*
Kobayashi et al, JACS, 1998, vol. 120, pp. 908-919.*
Chong et al, Tetrahedron Letters, vol. 27, No. 45, pp. 5445-5448.*
Kobayashi et al, JACS, 1998, vol. 120, pp. 908-919.*
Chong et al, Tetrahedron Letters, vol. 27, No. 45, pp. 5445-5448.*
J.M. Chong: “Alkylation of stabilized acetylides in DMSO. Preparation of alpha, beta- acetylenic alcohols and acetals” Tetrahedron Letters, vol. 27, No. 45, 1986, pp. 5445-5448, XP002138832. Oxford GB, p. 5445—p. 5446.
International Search Report.

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