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Title:
PRODUCTION OF NOVEL BICYCLIC LACTONE
Document Type and Number:
Japanese Patent JPS6284076
Kind Code:
A
Abstract:
A method for synthesizing a wide variety of bicyclic lactones, as represented generally by the following structures (la) and (lb)wherein A= represents the group,which has had an additional hydrogen atom removed from a ring-carbon to form a carbon-oxygen bond between said ring-carbon and the oxygen atom in the lactone ring; and wherein each of R1, R3, R4, R5, R6, and R8 are independently selected from the group consisting of-H and-CH3; R2 is selected from the group consisting of -H,-CH3, and -C2H5; R7 is hydrogen; or with respect to structure (la), R7 together with R3, or if R2 and R3 are both groups other than hydrogen, together with R8 may represent a carbon-carbon bond; and wherein m is an integer from 1 to 5; o is 0,1,2, or3; and p is 0, 1, or2; providedthatthe sum of m+o+p is an integer from 3 to 5.When the desired lactone is represented by formula (Ib) above, the method of the present invention comprises heating under aqueous acidic conditions a beta, gamma-unsaturated cyclic nitrile having the formula (II),wherein R2, R3, R4, R5, R6, R8, m, o and p are as defined above, to form the desired bicyclic lactone. When the desired lactone is represented by Formula la above, an aldehyde having the formula (III),wherein R, is as defined above, is employed as an additional reactant.

Inventors:
SUTEFUAN KORUTE
KUREIGU KUURUSUTON
FURIIDOHERUMU KORUTE
Application Number:
JP19386886A
Publication Date:
April 17, 1987
Filing Date:
August 19, 1986
Export Citation:
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Assignee:
ANGUS CHEMICAL
International Classes:
C07D307/83; B01J31/00; C07B61/00; C07C67/00; C07C253/00; C07C255/31; C07D307/93; C07D311/00; C07D311/76; C07D311/94; C07D315/00; (IPC1-7): B01J31/04; C07C120/00; C07C121/48; C07D307/83; C07D307/93; C07D311/76; C07D311/94
Attorney, Agent or Firm:
Kyozo Yuasa



 
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